Dyfyniad APA

Vaughan, D., Asbury, T., & Riordan-Eva, P. (1999). General ophthalmology (15th ed.). Appleton & Lange.

Dyfyniad Arddull Chicago

Vaughan, Daniel, Taylor Asbury, and Paul Riordan-Eva. General Ophthalmology. 15th ed. Stamford, CT: Appleton & Lange, 1999.

Dyfyniad MLA

Vaughan, Daniel, et al. General Ophthalmology. 15th ed. Appleton & Lange, 1999.

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