APA (7th ed.) Citation

MSD AGVET (Firm), Yakstis, J. J., & Johnstone, C. (1985). Parasites of horses (Second edition.). Merck.

Chicago Style (17th ed.) Citation

MSD AGVET (Firm), Jerome J. Yakstis, and Colin Johnstone. Parasites of Horses. Second edition. Rahway, N.J.: Merck, 1985.

MLA (9th ed.) Citation

MSD AGVET (Firm), et al. Parasites of Horses. Second edition. Merck, 1985.