Cita APA (7a ed.)

Sanberg, P. R., & Krema, R. M. T. (1992). Over-the-counter drugs: Harmless or hazardous? (Updated [ed.].). Chelsea House.

Cita Chicago Style (17a ed.)

Sanberg, Paul R., y Richard M. T. Krema. Over-the-counter Drugs: Harmless or Hazardous? Updated [ed.]. New York [etc.]: Chelsea House, 1992.

Cita MLA (9a ed.)

Sanberg, Paul R., y Richard M. T. Krema. Over-the-counter Drugs: Harmless or Hazardous? Updated [ed.]. Chelsea House, 1992.