APA (7e ed.) Bronvermelding

Hahn, D. B., & Payne , W. A. (2001). Focus on health (5th ed.). McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Hahn, Dale B., en Wayne A. Payne. Focus on Health. 5th ed. Boston: McGraw-Hill, 2001.

MLA (9e ed.) Bronvermelding

Hahn, Dale B., en Wayne A. Payne. Focus on Health. 5th ed. McGraw-Hill, 2001.