Brembeck, Cole S.
John Wiley & Sons, 1967
Buku Teks
Allyn and Bacon, 1991
Buku Teks
Black, Jill M.
Jossey-Bass, 2010
Buku Teks
Paterson, Robert G. (Robert Gildersleeve)
McGraw-Hill, 1950
Buku Teks
by Randall R. Cottrell, James T. Girvan, Denise M. Seabert, Caile Spear, James F. McKenzie
Pearson Education, 2018
Buku Teks