APA Alıntı

Bechtel,Helmut. (1981). The manual of cultivated orchid species. Bath press.

Chicago Stili Alıntı

Bechtel,Helmut. The Manual of Cultivated Orchid Species. Great britain: Bath press, 1981.

MLA Alıntı

Bechtel,Helmut. The Manual of Cultivated Orchid Species. Bath press, 1981.