APA (7th ed.) Citation

Drwal, J. M. (1986). Estimation of ammonia volatilization from surface-applied urea as indicated by bermudagrass N-use efficiency. [publisher not identified].

Chicago Style (17th ed.) Citation

Drwal, John Matthew. Estimation of Ammonia Volatilization from Surface-applied Urea as Indicated by Bermudagrass N-use Efficiency. [Place of publication not identified]: [publisher not identified], 1986.

MLA (9th ed.) Citation

Drwal, John Matthew. Estimation of Ammonia Volatilization from Surface-applied Urea as Indicated by Bermudagrass N-use Efficiency. [publisher not identified], 1986.