Pile, John
Watson-Guptil, 1976
Buku Referensi
Kraemer, Sieverts & Partners ; English translation by James L. Ritchie
McGraw-Hill , 1977
Buku Teks SO
Kraemer, Sieverts & Partners ; English translation by James L. Ritchie
McGraw-Hill , 1977
Buku Teks SO
Cheng, Kalley, editorial director
New York : Page One, 2004,
Buku Referensi
Page one Publishing , 2003
Buku Referensi