Dyfyniad APA

Raby, P. (2001). Alfred Russel Wallace: A life. Princeton University Press.

Dyfyniad Arddull Chicago

Raby, Peter. Alfred Russel Wallace: A Life. New Jersey: Princeton University Press, 2001.

Dyfyniad MLA

Raby, Peter. Alfred Russel Wallace: A Life. Princeton University Press, 2001.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.