Cita APA (7a ed.)
Johnson, L. G. (1983). Biology. Wm. C. Brow Company Publishers.
Cita Chicago Style (17a ed.)
Johnson, Leland G. Biology. United States: Wm. C. Brow Company Publishers, 1983.
Cita MLA (9a ed.)
Johnson, Leland G. Biology. Wm. C. Brow Company Publishers, 1983.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.