APA (7th ed.) Citation

Ayad, G., Toll, J., & Williams, J. T. (1980). Wheat. IBPGR Secretariat.

Chicago Style (17th ed.) Citation

Ayad, G., Jane Toll, and J. T. Williams. Wheat. Rome: IBPGR Secretariat, 1980.

MLA (8th ed.) Citation

Ayad, G., et al. Wheat. IBPGR Secretariat, 1980.