Myers, Charles Nash, author
Princeton University , 1965
Buku Teks
Ministry of Education & Human Resources Development, Republic of Korea, 2006
Buku Teks
edited by Yat-hoong Yip
Regional Institute of Higher Education and Development, 1972
Buku Teks
Carlor, Manuel L
Praeger, 1974
Buku Teks
Scott Ian
The John Hopkins University Press , 1982
Buku Teks