Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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