APA-ийн эшлэл(7 дахь хэвлэлт)

ebrary, Inc, & Villanueva, J. P. (2010). Personality traits: Classifications, effects, and changes. Nova Science Publishers.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

ebrary, Inc, ба John Paul Villanueva. Personality Traits: Classifications, Effects, and Changes. Hauppauge, NY: Nova Science Publishers, 2010.

MLA -ийн эшлэл (9 дэх хэвлэлт)

ebrary, Inc, ба John Paul Villanueva. Personality Traits: Classifications, Effects, and Changes. Nova Science Publishers, 2010.