APA način citiranja

Grala, W. (1987). Nitrogen utilization in pigs as affected by dietery induced losses of ileal endogenous nitrogen. Wageningen.

Čikaški stil citiranja

Grala, Witold. Nitrogen Utilization in Pigs As Affected By Dietery Induced Losses of Ileal Endogenous Nitrogen. Wageningen, 1987.

MLA način citiranja

Grala, Witold. Nitrogen Utilization in Pigs As Affected By Dietery Induced Losses of Ileal Endogenous Nitrogen. Wageningen, 1987.