APA

Litwin M. S., McNaughton-Collins M., Fowler F. J., Nickel J. C., Calhoun E. A., Pontari M. A., Alexander R. B., Farrar J. T. & O'Leary M. P. (19990817). The National Institutes of Health chronic prostatitis symptom index: development and validation of a new outcome measure. Chronic Prostatitis Collaborative Research Network. : The Journal of urology.

Chicago

Litwin M S, McNaughton-Collins M, Fowler F J, Nickel J C, Calhoun E A, Pontari M A, Alexander R B, Farrar J T and O'Leary M P. 19990817. The National Institutes of Health chronic prostatitis symptom index: development and validation of a new outcome measure. Chronic Prostatitis Collaborative Research Network. : The Journal of urology.

Harvard

Litwin M. S., McNaughton-Collins M., Fowler F. J., Nickel J. C., Calhoun E. A., Pontari M. A., Alexander R. B., Farrar J. T. and O'Leary M. P. (19990817). The National Institutes of Health chronic prostatitis symptom index: development and validation of a new outcome measure. Chronic Prostatitis Collaborative Research Network. : The Journal of urology.

MLA

Litwin M S, McNaughton-Collins M, Fowler F J, Nickel J C, Calhoun E A, Pontari M A, Alexander R B, Farrar J T and O'Leary M P. The National Institutes of Health chronic prostatitis symptom index: development and validation of a new outcome measure. Chronic Prostatitis Collaborative Research Network. : The Journal of urology. 19990817.