Hobbs, G. M. (1972). Practical mathematics (3rd.ed.). American technical.
Chicago Style (17th ed.) CitationHobbs, Glen M. Practical Mathematics. 3rd.ed. Illinois: American technical, 1972.
MLA引文Hobbs, Glen M. Practical Mathematics. 3rd.ed. American technical, 1972.
警告:這些引文格式不一定是100%准確.