Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.