APA
John Maddox, . (151999). Nature. U.S.A: National Institutes of Health.
Chicago
John Maddox, . 151999. Nature. U.S.A: National Institutes of Health.
Harvard
John Maddox, . (151999). Nature. U.S.A: National Institutes of Health.
MLA
John Maddox, . Nature. U.S.A: National Institutes of Health. 151999.