Παραπομπή APA

Kehl, G. L. (1949). The principles of metallographic laboratory practice (3rd ed.). New York: McGraw-Hill Book Company.

Παραπομπή Chicago Style

Kehl, George Louis. The Principles of Metallographic Laboratory Practice. 3rd ed. New York: McGraw-Hill Book Company, 1949.

Παραπομπή MLA

Kehl, George Louis. The Principles of Metallographic Laboratory Practice. 3rd ed. New York: McGraw-Hill Book Company, 1949.

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