Spencer, H. C. (1957). Technical drawing problems: Series 2. Macmillan.
Chicago Style (17th ed.) CitationSpencer, Henry Cecil. Technical Drawing Problems: Series 2. New York: Macmillan, 1957.
MLA (9th ed.) CitationSpencer, Henry Cecil. Technical Drawing Problems: Series 2. Macmillan, 1957.
Warning: These citations may not always be 100% accurate.