Trích dẫn APA

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

Trích dẫn kiểu Chicago

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

Trích dẫn MLA

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

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