Tooley, James, author
2013, 2013
Buku Teks
Haynes, Jeff, author
Yayasan Obor Indonesia, 2000
Buku Teks
Haynes, Jeff, author
Yayasan Obor Indonesia, 2000
Buku Teks
Troy Sarajar, author
Universitas Indonesia, 1997
UI - Skripsi (Membership)
Berg, H.J. van den, author
J.B. Wolters Groningen, 1951
Buku Teks