Dyfyniad APA

Nixon, H. H., & O'Donnell, B. (1992). The essentials of paediatric surgery (4th ed.). Butterworth-Heinemann.

Dyfyniad Arddull Chicago

Nixon, H. Homewood, and Barry O'Donnell. The Essentials of Paediatric Surgery. 4th ed. Oxford: Butterworth-Heinemann, 1992.

Dyfyniad MLA

Nixon, H. Homewood, and Barry O'Donnell. The Essentials of Paediatric Surgery. 4th ed. Butterworth-Heinemann, 1992.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.