Rossi, Renzo, author
Macmillan, 1996
Buku Referensi
Artikel Jurnal
James Danandjaja, author
Pustaka Sinar Harapan, 1999
Buku Teks
Venansia Ajeng Surya Ariyani Pedo, author
2016
UI - Tesis (Membership)
Frideres, James S
Prentice Hall Canada, 1988
Buku Teks