Klein, B. (1965). Guide to american educational directories: A guide to the major educational directories of the United States (2nd ed.). New York: McGraw-Hill Book Company.
Παραπομπή Chicago StyleKlein, Bernard. Guide to American Educational Directories: A Guide to the Major Educational Directories of the United States. 2nd ed. New York: McGraw-Hill Book Company, 1965.
Παραπομπή MLAKlein, Bernard. Guide to American Educational Directories: A Guide to the Major Educational Directories of the United States. 2nd ed. New York: McGraw-Hill Book Company, 1965.
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