APA (7th ed.) Citation

(1992). The illustrated encyclopeadia of orchids. Headline.

Chicago Style (17th ed.) Citation

The Illustrated Encyclopeadia of Orchids. London: Headline, 1992.

MLA (9th ed.) Citation

The Illustrated Encyclopeadia of Orchids. Headline, 1992.

Warning: These citations may not always be 100% accurate.