Cita APA (7th ed.)

(2002). Strengthen your immune system: Boosting the body's own healing powers i the fight against disease. Reader's Digest.

Cita Chicago (17th ed.)

Strengthen Your Immune System: Boosting the Body's Own Healing Powers I the Fight Against Disease. Sydney, Australia: Reader's Digest, 2002.

Cita MLA (9th ed.)

Strengthen Your Immune System: Boosting the Body's Own Healing Powers I the Fight Against Disease. Reader's Digest, 2002.