APA (7e ed.) Bronvermelding

Midlarsky, E., & Kahana, E. (1994). Altruism in later life. Sage Publications.

Chicago (17e ed.) Bronvermelding

Midlarsky, Elizabeth, en Eva Kahana. Altruism in Later Life. Thousand Oaks: Sage Publications, 1994.

MLA (8e ed.) Bronvermelding

Midlarsky, Elizabeth, en Eva Kahana. Altruism in Later Life. Sage Publications, 1994.