Dyfyniad APA

Blumenthal, J. C. (1969). Tests for English 2600: A programed course in grammar and usage (3rd ed.). Harcourt, Brace & World.

Dyfyniad Arddull Chicago

Blumenthal, Joseph C. Tests for English 2600: A Programed Course in Grammar and Usage. 3rd ed. New York, N.Y.: Harcourt, Brace & World, 1969.

Dyfyniad MLA

Blumenthal, Joseph C. Tests for English 2600: A Programed Course in Grammar and Usage. 3rd ed. Harcourt, Brace & World, 1969.

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