APA (7th ed.) Citation

Ludlow, F. (1945). The Whooper Swan (Cygnus Cygnus). Bombay Natural History Society.

Chicago Style (17th ed.) Citation

Ludlow, F. The Whooper Swan (Cygnus Cygnus). Bombay Natural History Society, 1945.

MLA (9th ed.) Citation

Ludlow, F. The Whooper Swan (Cygnus Cygnus). Bombay Natural History Society, 1945.

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