Sousa, John J., author
Rhode Island Consortium, 1990
Buku Teks
Semishin, Vasilii Ivanovich
Peace, [date of publication not identified]
Buku Teks
edited by Bruce W. Burkhart and Wesley S. Thompson
Burgess Publishing, 1972
Buku Teks
Yarbrough, James D., author
Burgess Publishing, 1970
Buku Teks
Deason, Temp R., author
Burgess, 1968
Buku Teks