Stone, Carolyn R.
Wren Publishing, 1974
Buku Referensi
Hanna Balqis Rizal
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2016
UI - Skripsi Membership
Loczy, Denes, editor
Springer, 2012
eBooks
Easterbrook, Don J.
Prentice-Hall, 1999
Buku Teks
Easterbrook, Don J.
Macmillan Publishing Company, 1993
Buku Teks