United States. Government Printing Office. (1931). Apprentice, extracts from address given by Mr. Thomas Knapp, superintendent of instruction, Mergenthaler Linotype School, Chicago, before students of Chicago School of Printing. GPO.
Chicago Style (17th ed.) CitationUnited States. Government Printing Office. Apprentice, Extracts from Address Given by Mr. Thomas Knapp, Superintendent of Instruction, Mergenthaler Linotype School, Chicago, Before Students of Chicago School of Printing. [Washington]: GPO, 1931.
MLA (9th ed.) CitationUnited States. Government Printing Office. Apprentice, Extracts from Address Given by Mr. Thomas Knapp, Superintendent of Instruction, Mergenthaler Linotype School, Chicago, Before Students of Chicago School of Printing. GPO, 1931.
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