Livingston, Kathryn
Ohio Rockport Publishers 1999,
Buku Referensi
Livingston, Kathryn
Rockport Publishers, 1999
Buku Teks
Arrafiani, author
Griya Kreasi, 2012
Buku Teks
Achruly Patria Noor, author
Fakultas Teknik Universitas Indonesia, 1999
UI - Skripsi (Membership)
H.K. Ishar
Gramedia, 1992
Buku Teks