Cita APA

Hearing instruments. Duluth, Minn.: Harcourt Brace Jovanovich.

Chicago Style Citation

Hearing Instruments. Duluth, Minn.: Harcourt Brace Jovanovich.

Cita MLA

Hearing Instruments. Duluth, Minn.: Harcourt Brace Jovanovich.

Atenció: Aquestes cites poden no estar 100% correctes.