APA aipamena

Johnson, G. B. (2009). Essentials of the living world. 3rd ed: McGraw-Hill Education.

Chicago Style aipamena

Johnson, George B. Essentials of the Living World. 3rd ed: McGraw-Hill Education, 2009.

MLA aipamena

Johnson, George B. Essentials of the Living World. 3rd ed: McGraw-Hill Education, 2009.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.