Colley, Susan Jane
Prentice-Hall, , 1998
Buku Teks
Hummel, James A., author
Addison-Wesley , 1967
Buku Teks
Nurul Maghfirah, author
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2017
UI - Skripsi (Membership)
Varberg, Dale E., author
Pearson - Prentice Hall, 2007
Buku Teks
Bartle, Robert Gardner, 1927-, author
Scott, Foresman, 1968
Buku Teks