Παραπομπή APA

Hill, A. F. (1952). Economic botony: A text book of useful plants and plant products (2nd ed.). McGraw-Hill.

Παραπομπή Chicago Style

Hill, Albert F. Economic Botony: A Text Book of Useful Plants and Plant Products. 2nd ed. Newyork: McGraw-Hill, 1952.

Παραπομπή MLA

Hill, Albert F. Economic Botony: A Text Book of Useful Plants and Plant Products. 2nd ed. McGraw-Hill, 1952.