Cita APA (7a ed.)

Parkes, L. C., & Kenwood, H. R. (1923). Hygiene and public health: By Louis C. Parkes and Henry R. Kenwood (7th ed.). Blakiston.

Cita Chicago Style (17a ed.)

Parkes, Louis Coltman, y Henry R. Kenwood. Hygiene and Public Health: By Louis C. Parkes and Henry R. Kenwood. 7th ed. Philadelphia: Blakiston, 1923.

Cita MLA (8a ed.)

Parkes, Louis Coltman, y Henry R. Kenwood. Hygiene and Public Health: By Louis C. Parkes and Henry R. Kenwood. 7th ed. Blakiston, 1923.