National Institute of Education, Singapore. (1995). Counseling in the 21st century: 5th International Conference, Hong Kong, 1995. s.n.].
Chicago Style aipamenaNational Institute of Education, Singapore. Counseling in the 21st Century: 5th International Conference, Hong Kong, 1995. [S.l: s.n.], 1995.
MLA aipamenaNational Institute of Education, Singapore. Counseling in the 21st Century: 5th International Conference, Hong Kong, 1995. s.n.], 1995.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.