APA (7th ed.) Zitazioa

Alpi, A. (1977). Flower formation in ornamentals. ISHS.

Chicago Style (17th ed.) Zitazioa

Alpi, A. Flower Formation in Ornamentals. La Haya: ISHS, 1977.

MLA (9th ed.) Zitazioa

Alpi, A. Flower Formation in Ornamentals. ISHS, 1977.