Fletcher, Robert H.
Clinical epidemiology : the essentials
Williams & Wilkins, 1996
 Buku Teks SO
Fletcher, Robert H.
Sari epidemiologi klinik = Clinical epidemiology: the essentials
Gajah Mada University Press , 1991
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Fletcher, Robert H.
Clinical epidemiology : the essentials / Robert H. Fletcher, Suzanne W. Fletcher, Grant S. Fletcher
Lippincott Williams &​ Wilkins, 1996
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Hulley, Stephen
Designing clinical research
Lippincott Williams & Wilkins, 2007
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Emergency medicine: clinical essentials
James G. Adam, Erik D. Barton, Jamie Collings, Peter M.C. DeBlieux, Michael A. Gisondi, Eric S. Nadel, editor
Elsevier Saunder, 2013
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