Gill F.B. (1990). Ornithology. Island press.
Чикаго маягийн жагсаалтGill F.B. Ornithology. New York: Island press, 1990.
MLA ишлэлGill F.B. Ornithology. Island press, 1990.
Warning: These citations may not always be 100% accurate.
APA Баримт