Παραπομπή σε μορφή APA (7η εκδ.)

Jenkinson, C., Heffernan, C., Doll, H., Fitzpatrick, R., & Society, B. G. (2006). The Parkinson's Disease Questionnaire (PDQ-39): Evidence for a method of imputing missing data. Oxford University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Jenkinson, C., C. Heffernan, H. Doll, R. Fitzpatrick, και British Geriatrics Society. The Parkinson's Disease Questionnaire (PDQ-39): Evidence for a Method of Imputing Missing Data. Oxford University Press, 2006.

Παραπομπή σε μορφή MLA (9th εκδ.)

Jenkinson, C., et al. The Parkinson's Disease Questionnaire (PDQ-39): Evidence for a Method of Imputing Missing Data. Oxford University Press, 2006.