(2002). Strengthen your immune system: Boosting the body's own healing powers i the fight against disease. Reader's Digest.
Chicago-viite (17. p.)Strengthen Your Immune System: Boosting the Body's Own Healing Powers I the Fight Against Disease. Sydney, Australia: Reader's Digest, 2002.
MLA-viite (9. p.)Strengthen Your Immune System: Boosting the Body's Own Healing Powers I the Fight Against Disease. Reader's Digest, 2002.
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