Cita APA (7th ed.)

Kirk, R. H., Mayshark, C., & Hornsby, R. P. (1972). Personal health in ecologic perspective. Mosby.

Cita Chicago (17th ed.)

Kirk, Robert H., Cyrus Mayshark, i Robert Preston Hornsby. Personal Health in Ecologic Perspective. Saint Louis: Mosby, 1972.

Cita MLA (9th ed.)

Kirk, Robert H., et al. Personal Health in Ecologic Perspective. Mosby, 1972.