Universitas Indonesia, 2012
UI - Skripsi (Open)
Vira Primanugrah Shakanti
2019
UI - Skripsi (Membership)
Friday, Nancy
Morrow, 1985
Buku Teks
Yudhistira A.N.M. Massardi
Gramedia Pustaka Utama, 1992
Buku Teks
Cook, Guy W.D.
Oxford University Press , 1993
Buku Teks