Παραπομπή σε μορφή APA (7η εκδ.)

Walker, G. A. (2002). Common statistical methods for clinical research with SAS examples (2nd ed.). SAS Publishing.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Walker, Glenn A. Common Statistical Methods for Clinical Research with SAS Examples. 2nd ed. North Carolina: SAS Publishing, 2002.

Παραπομπή σε μορφή MLA (8th εκδ.)

Walker, Glenn A. Common Statistical Methods for Clinical Research with SAS Examples. 2nd ed. SAS Publishing, 2002.