Trad, Paul V.
John Wiley & Sons, 1987
Buku Teks
Yongky, author
1990
UI - Tesis (Membership)
Averina Elga Christie, author
2019
UI - Skripsi (Membership)
Harrington, Richard
New York, 1993
Buku Teks
Arshita Auliana, author
2015
UI - Tesis (Membership)