Trích dẫn APA

Robert L Zimdahl. (1989). Seeds and seedlings of weeds in rice in South and Southeast Asia. Philippines: IRRI.

Trích dẫn kiểu Chicago

Robert L Zimdahl. Seeds and Seedlings of Weeds in Rice in South and Southeast Asia. Philippines: IRRI, 1989.

Trích dẫn MLA

Robert L Zimdahl. Seeds and Seedlings of Weeds in Rice in South and Southeast Asia. Philippines: IRRI, 1989.

Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.