APA (7e ed.) Bronvermelding

Eckholm, E. P. (1977). The picture of health: Environmental sources of disease (First edition.). Norton.

Chicago (17e ed.) Bronvermelding

Eckholm, Erik P. The Picture of Health: Environmental Sources of Disease. First edition. New York: Norton, 1977.

MLA (8e ed.) Bronvermelding

Eckholm, Erik P. The Picture of Health: Environmental Sources of Disease. First edition. Norton, 1977.