APA (7e ed.) Bronvermelding

Foster, R. G., & Kreitzman, L. (2009). Seasons of life: The biological rhythms that enable living things to thrive and survive. Yale University Press.

Chicago (17e ed.) Bronvermelding

Foster, Russell G., en Leon Kreitzman. Seasons of Life: The Biological Rhythms That Enable Living Things to Thrive and Survive. New Haven: Yale University Press, 2009.

MLA (9e ed.) Bronvermelding

Foster, Russell G., en Leon Kreitzman. Seasons of Life: The Biological Rhythms That Enable Living Things to Thrive and Survive. Yale University Press, 2009.