APA ציטוט

Perkinson, H. J. (1971). The possibilities of error: An approach to education. D. McKay.

Chicago Style (17th ed.) Citation

Perkinson, Henry J. The Possibilities of Error: An Approach to Education. New York: D. McKay, 1971.

ציטוט MLA

Perkinson, Henry J. The Possibilities of Error: An Approach to Education. D. McKay, 1971.