Cita APA (7a ed.)

Pridgeon, A. (2003). The illustrated encyclopedia of orchids. Timber Press.

Cita Chicago Style (17a ed.)

Pridgeon, Alec. The Illustrated Encyclopedia of Orchids. Timber Press, 2003.

Cita MLA (8a ed.)

Pridgeon, Alec. The Illustrated Encyclopedia of Orchids. Timber Press, 2003.