Cita APA

Raven & Johnson. (1995). Understanding biology (3.). WM C Brown communications Inc.

Chicago Edition Citation

Raven i Johnson. Understanding Biology. 3. WM C Brown communications Inc, 1995.

Cita MLA

Raven i Johnson. Understanding Biology. 3. WM C Brown communications Inc, 1995.

Atenció: Aquestes cites poden no estar 100% correctes.