Lerner, Max, author
Simon and Schuster, 1957
Buku Teks
Corwin, Edward S., author
U.S. Government Printing Office, 1953
Buku Teks
Corwin, Edward S., author
Government Printing Office, 1953
Buku Teks
Corwin, Edward S., author
Government Printing Office, 1953
Buku Teks
edited by Hans L. Zetterberg
Unesco, 1956
Buku Teks