Dever, G.E. Alan
Aspen Publishers, 1991
Buku Teks
edited by Walter W. Holland and Lucien Karhausen
Henry Kimpton, 1978
Buku Teks
Issel, L. Michele
Jones & Bartlett Learning, 2014
Buku Teks
Leavel, Hugh Rodman
McGraw-Hill, 1958
Buku Teks SO
edited by Harry Rosen
Spectrum Publ. , 1977
Buku Teks