Cita APA

Hofstad, M. S., Calnek, B. W., Helmboldt, C. F., Reid, W. M., & Yoder, H. W. (1978). Deseases of poultry (7a ed.). Iowa, Estados Unidos: American Association of Avian Pathologists.

Citación estilo Chicago

Hofstad, M. S., B. W. Calnek, C. F. Helmboldt, W. M. Reid, and H. W. Yoder. Deseases of Poultry. 7a ed. Iowa, Estados Unidos: American Association of Avian Pathologists, 1978.

Cita MLA

Hofstad, M. S., et al. Deseases of Poultry. 7a ed. Iowa, Estados Unidos: American Association of Avian Pathologists, 1978.