Neukrug, Edward S.
Brooks/Cole Cengage Learning, 2012
Buku Teks SO
Arbuckle, Dugald S.
Allyn and Bacon, 1961
Buku Teks SO
Hansen, James C.
Allyn and Bacon , 1986
Buku Teks SO
Soundararajan, Ramesh
Tata McGraw-Hill, 2012
Buku Teks
Corey, Gerald
Brooks/Cole Cengage Learning, 2013
Buku Teks