APA (7th ed.) Citation

Pennsylvania. Ornithologist & Warren, B. H. (1890). Report on the birds of Pennsylvania.: With special reference to the food-habits, based on over four thousand stomach examinations (2d ed., rev. and augm.). E.K. Meyers, state printer.

Chicago Style (17th ed.) Citation

Pennsylvania. Ornithologist and Benjamin Harry Warren. Report on the Birds of Pennsylvania.: With Special Reference to the Food-habits, Based on over Four Thousand Stomach Examinations. 2d ed., rev. and augm. Harrisburg: E.K. Meyers, state printer, 1890.

MLA (9th ed.) Citation

Pennsylvania. Ornithologist and Benjamin Harry Warren. Report on the Birds of Pennsylvania.: With Special Reference to the Food-habits, Based on over Four Thousand Stomach Examinations. 2d ed., rev. and augm. E.K. Meyers, state printer, 1890.