APA (7th ed.) Citation

Johnston, D. E. (1991). Exotic animal medicine in practice. Veterinary Learning Systems.

Chicago Style (17th ed.) Citation

Johnston, Dudley E. Exotic Animal Medicine in Practice. Trenton, N.J.: Veterinary Learning Systems, 1991.

MLA (9th ed.) Citation

Johnston, Dudley E. Exotic Animal Medicine in Practice. Veterinary Learning Systems, 1991.