Dyfyniad APA
Everitt, B., & Wessely, S. (2008). Clinical trials in psychiatry (2nd ed.). John Wiley & Sons.
Dyfyniad Arddull Chicago
Everitt, Brian, and Simon Wessely. Clinical Trials in Psychiatry. 2nd ed. Chichester, England ; Hoboken, NJ: John Wiley & Sons, 2008.
Dyfyniad MLA
Everitt, Brian, and Simon Wessely. Clinical Trials in Psychiatry. 2nd ed. John Wiley & Sons, 2008.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.