Cita APA (7a ed.)

Hibbert, G. A., & Chan, M. (1989). Respiratory control: Its contribution to the treatment of panic attacks : a controlled study. [s.n.].

Cita Chicago Style (17a ed.)

Hibbert, George A., y Michael Chan. Respiratory Control: Its Contribution to the Treatment of Panic Attacks : A Controlled Study. [S.l.]: [s.n.], 1989.

Cita MLA (9a ed.)

Hibbert, George A., y Michael Chan. Respiratory Control: Its Contribution to the Treatment of Panic Attacks : A Controlled Study. [s.n.], 1989.