Verbeke, Geert, author
Springer, 2000
Buku Teks
David J. Bartholomew ... [et.al]
CRC Press, Taylor & Francis Group, 2008
Buku Teks
Erickson, Bonnie H., author
LP3ES, 1983
Buku Teks
Andrews, Frank M.
University of Michigan, 1981
Buku Teks
Linneman, Thomas J., author
Routledge, 2018
Buku Teks