Cita APA (7th ed.)

Saniewski, M., Beyersbergen, J. C. M., & Bogatko, W. (1992). Sixth international symposium on flower bulbs. ISHS.

Cita Chicago (17th ed.)

Saniewski, M., J. C. M. Beyersbergen, i W. Bogatko. Sixth International Symposium on Flower Bulbs. Wageningen: ISHS, 1992.

Cita MLA (9th ed.)

Saniewski, M., et al. Sixth International Symposium on Flower Bulbs. ISHS, 1992.