APA (7th ed.) Citation

Schrag, L., Enz, H., & Klette, H. (1977). Healthy pigeons: Recognition, prevention and treatment of the major pigeon diseases (Eleventh edition.). Schober.

Chicago Style (17th ed.) Citation

Schrag, Ludwig, Hermann Enz, and Hermann Klette. Healthy Pigeons: Recognition, Prevention and Treatment of the Major Pigeon Diseases. Eleventh edition. Hengersberg: Schober, 1977.

MLA (9th ed.) Citation

Schrag, Ludwig, et al. Healthy Pigeons: Recognition, Prevention and Treatment of the Major Pigeon Diseases. Eleventh edition. Schober, 1977.