Cita APA (7a ed.)

Riggs, J. H. (1990). Respiratory facts. Jaypee.

Cita Chicago Style (17a ed.)

Riggs, John H. Respiratory Facts. New Delhi: Jaypee, 1990.

Cita MLA (9a ed.)

Riggs, John H. Respiratory Facts. Jaypee, 1990.