Gaya APA

Johnson, George B.. (2006). Essentials of the living world . New York: McGraw Hill Higher Education.

Gaya Chicago

Johnson, George B.. Essentials of the living world. New York: McGraw Hill Higher Education, 2006. Text.

Gaya MLA

Johnson, George B.. Essentials of the living world. New York: McGraw Hill Higher Education, 2006. Text.

Gaya Turabian

Johnson, George B.. Essentials of the living world. New York: McGraw Hill Higher Education, 2006. Print.