Hickey, Michael
Cambridge University Press, 1981
Buku Teks
Hutchinson, J.
At The Clarendon Press, 1967
Buku Teks
Benson, Lyman
D.C. Heath , 1957
Buku Teks
Ivan Widjanarko
Fakultas Teknik Universitas Indonesia, 2022
UI - Skripsi Membership
Jeffrey, Charles
Cambridge University Press, 1982
Buku Teks