Cita APA (7th ed.)

Welch, K. J. (1986). Pediatric surgery. Year book medical publishers.

Cita Chicago (17th ed.)

Welch, Kenneth J. Pediatric Surgery. Chicago: Year book medical publishers, 1986.

Cita MLA (9th ed.)

Welch, Kenneth J. Pediatric Surgery. Year book medical publishers, 1986.