Timmermans, Jean
Interscience Publishers, 1959
Buku Referensi
editor: Thomas P. Anderson, Robert W. Springer, Richard C. Warder, Jr.
Northwestern University, 1963
Buku Teks
Parsons, Roger, author
Butterworths Scientific Publications, 1959
Buku Referensi
Rahadianti Cahyani Putri Widadi, author
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2023
UI - Skripsi Membership
Guile, A.E., author
Pergamon Press, 1986
Buku Teks