Steffen, M. R. (1915). Special cattle therapy. American journal of veterinary therapy.
芝加哥风格引文Steffen, Martin Robert. Special Cattle Therapy. Chicago: American journal of veterinary therapy, 1915.
MLA引文Steffen, Martin Robert. Special Cattle Therapy. American journal of veterinary therapy, 1915.
警告：这些引文格式不一定是100％准确.