APA (7th ed.) Citation

Hagen, P., & Ekanayake, D. (1977). Handbook for cut-flower growers. Royal Botanic Gardens.

Chicago Style (17th ed.) Citation

Hagen, P.W, and D.T Ekanayake. Handbook for Cut-flower Growers. Peradeniya: Royal Botanic Gardens, 1977.

MLA (9th ed.) Citation

Hagen, P.W, and D.T Ekanayake. Handbook for Cut-flower Growers. Royal Botanic Gardens, 1977.