左福元. (2010). 轻轻松松学养肉牛. 中国农业出版社.
Chicago Style (17th ed.) Citation左福元. 轻轻松松学养肉牛. 中国农业出版社, 2010.
MLA (8th ed.) Citation左福元. 轻轻松松学养肉牛. 中国农业出版社, 2010.
Warning: These citations may not always be 100% accurate.
APA (7th ed.) Citation