Παραπομπή APA

Morthern, R. T. (1980). Miniature orchids. Van Nostrand Reinhold Company.

Παραπομπή Chicago Style

Morthern, R T. Miniature Orchids. New York: Van Nostrand Reinhold Company, 1980.

Παραπομπή MLA

Morthern, R T. Miniature Orchids. Van Nostrand Reinhold Company, 1980.