APA (7th ed.) Citation

Portmann, M., & Portmann, C. (1967). Audiometría Clínica.

Chicago Style (17th ed.) Citation

Portmann, Michel, and Claudine Portmann. Audiometría Clínica. 1967.

MLA (9th ed.) Citation

Portmann, Michel, and Claudine Portmann. Audiometría Clínica. 1967.

Warning: These citations may not always be 100% accurate.