Cita APA (7th ed.)
Ontrup, R. (1984). Intermittent Positive Pressure Breathing <IPPB> versus Sustained Maximal Inspiration <SMI>.
Cita Chicago (17th ed.)
Ontrup, Rolf-Dietmar. Intermittent Positive Pressure Breathing <IPPB> Versus Sustained Maximal Inspiration <SMI>. 1984.
Cita MLA (9th ed.)
Ontrup, Rolf-Dietmar. Intermittent Positive Pressure Breathing <IPPB> Versus Sustained Maximal Inspiration <SMI>. 1984.
Atenció: Aquestes cites poden no estar 100% correctes.