Hermawanto
2015
UI - Tesis (Membership)
Bennington, James L. (James Lynne), 1935-
W.B. Saunders, 1984
Buku Referensi
Estridge, Barbara H.
Delmar Cengage Learning, 2012
Buku Teks
edited by Richard A. McPherson, Matthew R. Pincus
Elsevier, 2017
Buku Teks
Freedman, Warren
Quorum Books , 1991
Buku Teks