Παραπομπή APA

Barton, J. G. (1967). pictorial encyclopedia of plants and flowers. Paul Hamlyn.

Παραπομπή Chicago Style

Barton, J G. Pictorial Encyclopedia of Plants and Flowers. London: Paul Hamlyn, 1967.

Παραπομπή MLA

Barton, J G. Pictorial Encyclopedia of Plants and Flowers. Paul Hamlyn, 1967.