Maugham, W. Somerset, author
Penguin Books , 1971
Buku Teks
Burton R. Clark, Guy R. Neave, editors-in-chief
Pergamon Press, 1992
Buku Referensi
Crest Publishing House, 1998,
Buku Referensi
C. Christhopher
Anmol Publicatioans PVT. Ltd, 1997
Buku Teks
Panca Oktavia Hadi Putra, author
Universitas Indonesia, 2019
UI - Disertasi (Membership)