FAO. (1990). FAO animal production and health series; 1990; N30: Animal health yearbook: 1990. Rome: FAO.
Trích dẫn kiểu ChicagoFAO. FAO Animal Production and Health Series; 1990; N30: Animal Health Yearbook: 1990. Rome: FAO, 1990.
MLA引文FAO. FAO Animal Production and Health Series; 1990; N30: Animal Health Yearbook: 1990. Rome: FAO, 1990.
警告:这些引文格式不一定是100%准确.