APA

Najarian J. S., Delaney J. P., . (1989). Progress in gastrointestinal surgery. Chicago: Year Book Medical Publishers.

Chicago

Najarian John S, Delaney John P, . 1989. Progress in gastrointestinal surgery. Chicago: Year Book Medical Publishers.

Harvard

Najarian J. S., Delaney J. P., . (1989). Progress in gastrointestinal surgery. Chicago: Year Book Medical Publishers.

MLA

Najarian John S, Delaney John P, . Progress in gastrointestinal surgery. Chicago: Year Book Medical Publishers. 1989.