Gaya APA

Peter H. Raven, George B. Johnson. (1995). Understanding Biology (Ed.3). USA: Wm. C. Brown Publishers.

Gaya Chicago

Peter H. Raven, George B. Johnson. Understanding Biology. Ed.3 USA: Wm. C. Brown Publishers, 1995. Text.

Gaya MLA

Peter H. Raven, George B. Johnson. Understanding Biology. Ed.3 USA: Wm. C. Brown Publishers, 1995. Text.

Gaya Turabian

Peter H. Raven, George B. Johnson. Understanding Biology. Ed.3 USA: Wm. C. Brown Publishers, 1995. Print.