Citazione Stile APA (7a Edizione)

Nichols, R., & Sheard, G. (1975). Post-harvest physiology of cut flowers. ISHS.

Citazione stile Chigago Style (17a edizione)

Nichols, R., e G. Sheard. Post-harvest Physiology of Cut Flowers. La Haya: ISHS, 1975.

Citatione MLA (9a ed.)

Nichols, R., e G. Sheard. Post-harvest Physiology of Cut Flowers. ISHS, 1975.