Wilson, Bright E., Jr.
An introduction to scientific research / E. Bright Wilson, Jr.
Dover Publications, 1990
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An introduction to social research / Edited by John T. Doby
edited by John T. Doby
Irvington, 1967
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Ross, Lloyd
John Curtin : a biography / Lloyd Ross
Macmillan, 1977
 Buku Teks
Chang, Kang-Tsung, 1943-
Introduction to geographic information systems
McGraw-Hill, 2014
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Freedman, Paul
The principles of scientific research
Public Affairs Press, 1950
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