Gordon, Leland J.
American Book , 1950
Buku Teks
Van Wylen, Gordon J., author
ohn Wiley & Sons, 1959
Buku Teks
Walker, Gordon, author
McGraw-Hill-Irwin, 2004
Buku Teks
Childe, V. Gordon, author
A Mentor Book, 1951
Buku Teks
Shillinglaw, Gordon
Richard D. Irwin, 1979
Buku Teks