APA (7e ed.) Bronvermelding

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.

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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