APA (7th ed.) Citation

Irwin, R. (1951). British bird books: An index to British ornithology ; A. D. 1481 to A. D. 1948. Grafton.

Chicago Style (17th ed.) Citation

Irwin, Raymond. British Bird Books: An Index to British Ornithology ; A. D. 1481 to A. D. 1948. London: Grafton, 1951.

MLA (9th ed.) Citation

Irwin, Raymond. British Bird Books: An Index to British Ornithology ; A. D. 1481 to A. D. 1948. Grafton, 1951.

Warning: These citations may not always be 100% accurate.