Lundy, James L., author
Eurasia Publishing House, 1968
Buku Teks
Bethel, Lawrence L., author
McGraw-Hill Kogakusha, 1971
Buku Teks
Filipetti, George, author
Richard D. Irwin, 1959
Buku Teks
Alford, Leon Pratt, author
Ronald Press, 1951
Buku Teks
Alford, Leon Pratt, author
Ronald Press, 1940
Buku Teks