[et.al.], A. S. .. (1977). Engineering mathematics. Van Nostrand Reinhold.
Chicago Style (17th ed.) Citation[et.al.], AJM Spencer ... Engineering Mathematics. Van Nostrand Reinhold, 1977.
MLA (8th ed.) Citation[et.al.], AJM Spencer ... Engineering Mathematics. Van Nostrand Reinhold, 1977.
Warning: These citations may not always be 100% accurate.