APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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