APA (7e ed.) Bronvermelding

Kerr, R. W. (1969). Herbalism through the ages ([1st ed.].). Supreme Grand Lodge of Amorc.

Chicago (17e ed.) Bronvermelding

Kerr, Ralph Whiteside. Herbalism Through the Ages. [1st ed.]. San Jose, Calif.: Supreme Grand Lodge of Amorc, 1969.

MLA (8e ed.) Bronvermelding

Kerr, Ralph Whiteside. Herbalism Through the Ages. [1st ed.]. Supreme Grand Lodge of Amorc, 1969.