APA aipamena

Niven, R. M., & Pickering, C. A. (1991). Vocal cord dysfunction and wheezing.

Chicago Style aipamena

Niven, R M., and C A. Pickering. Vocal Cord Dysfunction and Wheezing. 1991.

MLA aipamena

Niven, R M., and C A. Pickering. Vocal Cord Dysfunction and Wheezing. 1991.