Varel, V. H., Hashimoto, A. G., & Chen, Y. R. (1980). Effect of Temperature and Retention Time on Methane Production from Beef Cattle Waste.
استشهاد بنمط شيكاغوVarel, V. H., A. G. Hashimoto, و Y. R. Chen. Effect of Temperature and Retention Time On Methane Production From Beef Cattle Waste. 1980.
MLA استشهادVarel, V. H., A. G. Hashimoto, و Y. R. Chen. Effect of Temperature and Retention Time On Methane Production From Beef Cattle Waste. 1980.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.