APA

Laine M. T., Huggare J. A. & Ruoppi P. (19940420). A modification of the pressure-flow technique for measuring breathing of cold air and its effect on nasal cross-sectional area. : American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

Chicago

Laine M T, Huggare J A and Ruoppi P. 19940420. A modification of the pressure-flow technique for measuring breathing of cold air and its effect on nasal cross-sectional area. : American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

Harvard

Laine M. T., Huggare J. A. and Ruoppi P. (19940420). A modification of the pressure-flow technique for measuring breathing of cold air and its effect on nasal cross-sectional area. : American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

MLA

Laine M T, Huggare J A and Ruoppi P. A modification of the pressure-flow technique for measuring breathing of cold air and its effect on nasal cross-sectional area. : American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics. 19940420.