Holz, Robert K.
John Wiley & Sons, 1985
Buku Teks
Robinson, I.S.
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Buku Teks
Campbell, James B., 1944-
Guilford Press, 2011
Buku Teks
Siamak Khorram, Cynthia F. van der Wiele, Frank H. Koch, Stacy A. C. Nelson, Matthew D. Potts
Springer, 2016
Buku Teks SO
edited by John E. Estes and Leslie W. Senger
Hamilton, 1974
Buku Teks