Emerald Publishing Limited, 2019
eBooks
Kornblum, William
Wadsworth and Cengage Learning, 2012
Buku Teks SO
Kornblum, William
Harcourt Brace College Publishers, 1997
Buku Teks SO
Bryjak, George J
Allyn and Bacon, 1994
Buku Teks SO
Anastari
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 1992
UI - Skripsi Membership