Kim, Jun-hyok, author
Foreign Languages Pub. House, 2014
Buku Teks
Winna Efendi, author
Gramedia Pustaka Utama, 2021
Buku Teks
edited by Robert W. Tucker, Charles B. Keely and Linda Wrigley
Westview Press, 1992
Buku Teks
edited by Kathleen E. Hug
Office of International Infrmation Programs US Department of State, [Date of publication not identified]
Buku Teks
Eckstein, Otto, author
McGraw-Hill, 1983
Buku Teks