Wallace G. J., M. H. D. (1975). An introduction to ornithology (3rd ed.). Macmillan Collier Macmillan.
Чикаго маягийн жагсаалтWallace G. J., Mahan H. D. An Introduction to Ornithology. 3rd ed. New york: Macmillan Collier Macmillan, 1975.
MLA ишлэлWallace G. J., Mahan H. D. An Introduction to Ornithology. 3rd ed. Macmillan Collier Macmillan, 1975.
Warning: These citations may not always be 100% accurate.