Citazione Stile APA (7a Edizione)

Petri, J. L. (1988). Apple culture in the tropics and subtropics. ISHS.

Citazione stile Chigago Style (17a edizione)

Petri, José Luis. Apple Culture in the Tropics and Subtropics. Wageningen: ISHS, 1988.

Citatione MLA (9a ed.)

Petri, José Luis. Apple Culture in the Tropics and Subtropics. ISHS, 1988.