edited by John L. Gittleman
Comstock , 1989
Buku Teks
Brissenden, R.F. (Robert Francis), 1928-1991
Published for the British Council and the National Book League by Longmans, Green & Co, 1958
Buku Teks SO
Karmakar, Ayan
Springer Nature, 2019
eBooks
Sinambela, Joni
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2015
UI - Tesis Membership
Brissenden, R.F. (Robert Francis), 1928-1991
Angus and Roberson Publishers, 1972
Buku Teks SO