Παραπομπή APA

LAWRENCE, G. (1960). TAXONOMY OF VASCULAR PLANTS. Macmillan Company.

Παραπομπή Chicago Style

LAWRENCE, George.H.M. TAXONOMY OF VASCULAR PLANTS. NEW YORK: Macmillan Company, 1960.

Παραπομπή MLA

LAWRENCE, George.H.M. TAXONOMY OF VASCULAR PLANTS. Macmillan Company, 1960.