APA (7th ed.) Citation

Grubb, R. Selected orchidaceous plants. [Selbstverlag].

Chicago Style (17th ed.) Citation

Grubb, Roy. Selected Orchidaceous Plants. Caterham: [Selbstverlag].

MLA (9th ed.) Citation

Grubb, Roy. Selected Orchidaceous Plants. [Selbstverlag].

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