Dyfyniad APA

Cole, R., & Mackay, A. D. (1990). Essentials of respiratory disease (3rd ed.). Churchill Livingstone.

Dyfyniad Arddull Chicago

Cole, R.B, and A. David Mackay. Essentials of Respiratory Disease. 3rd ed. Edinburgh: Churchill Livingstone, 1990.

Dyfyniad MLA

Cole, R.B, and A. David Mackay. Essentials of Respiratory Disease. 3rd ed. Churchill Livingstone, 1990.

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