APA (7th ed.) Citation

Gillenwater, J. Y., & Howards, S. S. (1991). The year book of urology 1991. Year Book Medical Publications.

Chicago Style (17th ed.) Citation

Gillenwater, Jay Y., and Stuart S. Howards. The Year Book of Urology 1991. Chicago: Year Book Medical Publications, 1991.

MLA (8th ed.) Citation

Gillenwater, Jay Y., and Stuart S. Howards. The Year Book of Urology 1991. Year Book Medical Publications, 1991.