Cita APA

Hahn, D. B., & Payne, W. A. (2003). Focus on health (6th ed.). Boston: McGraw-Hill.

Chicago Style Citation

Hahn, Dale B., i Wayne A. Payne. Focus On Health. 6th ed. Boston: McGraw-Hill, 2003.

Cita MLA

Hahn, Dale B., i Wayne A. Payne. Focus On Health. 6th ed. Boston: McGraw-Hill, 2003.