Sample One:

Graham, S. M., & Clark, M. S. (2006). Self-Esteem and Organization of Valenced Information about Others: The “Jekyll and Hyde”-ing of Relationship Partners. Journal of Personality and Social Psychology, 90, 652–665.

comment: when you see all capitals in the title of the essay (journal article or book chapter), this usually means that the essay was extracted from the PEP, which is fine, or the author was using some older style manual. We want the entry to appear as follows:

Graham, S. M., & Clark, M. S. (2006). Self-esteem and organization of valenced information about others: The “Jekyll and Hyde”-ing of relationship partners. Journal of Personality and Social Psychology, 90, 652–665.

Sample Two:

Graham, S. M., & Clark, M. S. (2006). Self-esteem and organization of valenced information about others: The “Jekyll and Hyde”-ing of relationship partners. Journal of Personality and Social Psychology, 90(3), 652–665.

comment: we do not italicise the number of the volume, nor do we type the issue number, so we would want:

Graham, S. M., & Clark, M. S. (2006). Self-esteem and organization of valenced information about others: The “Jekyll and Hyde”-ing of relationship partners. Journal of Personality and Social Psychology, 90, 652–665.

Sample Three:

Graham, S. M., & Clark, M. S. (2006). Self-esteem and organization of valenced information about others: The “Jekyll and Hyde”-ing of relationship partners. Journal of Personality and Social Psychology, 90, 652–665.

________, & Clark, M. S. (2007). Self-esteem reconsidered from a totally different point of view with different data. Journal of Clinical Psychology, 76, 652–665. 

or

-------- & Clark, M. S. (2006). Self-esteem and organization of valenced information about others: The “Jekyll and Hyde”-ing of relationship partners. Journal of Personality and Social Psychology, 90, 652–665.

comment: we do not use this style for repetitions of names. An author's name, or authors' names, are repeated each time. This is what Magnes wants.

Graham, S. M., & Clark, M. S. (2006). Self-esteem and organization of valenced information about others: The “Jekyll and Hyde”-ing of relationship partners. Journal of Personality and Social Psychology, 90, 652–665.

Graham, S. M. & Clark, M. S. (2007). Self-esteem reconsidered from a totally different point of view with different data. Journal of Clinical Psychology, 76, 652–665. 

Graham, S. M. (2003). Data as these effect the balaganization of inner turmoil as a function of neurotic and borderline tendencies. Journal of Psychopathology, 23, 678-699.