Cita APA

Welty, J. C. n. 1., & Baptista, L. F. 1. (1990). The Life of birds (4. edition.). Fort Worth, [Texas]: Harcourt Brace Jovanovich College Publishers.

Citación estilo Chicago

Welty, Joel Carl n. 1901, y Luis Felipe 1941-2000 Baptista. The Life of Birds. 4. edition. Fort Worth, [Texas]: Harcourt Brace Jovanovich College Publishers, 1990.

Cita MLA

Welty, Joel Carl n. 1901, y Luis Felipe 1941-2000 Baptista. The Life of Birds. 4. edition. Fort Worth, [Texas]: Harcourt Brace Jovanovich College Publishers, 1990.