Abbott, W. S. (1920). Results of experiments with miscellaneous substaces against chicken lice and the dog flea. U.S. Department of Agriculture.

Abbott, Walter Sidney. Results of Experiments with Miscellaneous Substaces Against Chicken Lice and the Dog Flea. Washington: U.S. Department of Agriculture, 1920.

Abbott, Walter Sidney. Results of Experiments with Miscellaneous Substaces Against Chicken Lice and the Dog Flea. U.S. Department of Agriculture, 1920.