APA način citiranja (7. izdanje)

Lopker, J. (2000). Pictures of personality: Guide to the four human natures (First edition.). Typology.

Čikaški stil citiranja (17. izdanje)

Lopker, John. Pictures of Personality: Guide to the Four Human Natures. First edition. Los Angeles, CA: Typology, 2000.

MLA način citiranja (8. izdanje)

Lopker, John. Pictures of Personality: Guide to the Four Human Natures. First edition. Typology, 2000.