APA (7e ed.) Bronvermelding

Emmons, R. A. (1999). The psychology of ultimate concerns: Motivation and spirituality in personality. Guilford Press.

Chicago (17e ed.) Bronvermelding

Emmons, Robert A. The Psychology of Ultimate Concerns: Motivation and Spirituality in Personality. New York: Guilford Press, 1999.

MLA (9e ed.) Bronvermelding

Emmons, Robert A. The Psychology of Ultimate Concerns: Motivation and Spirituality in Personality. Guilford Press, 1999.