Fiesenheiser, E. I., & Fiesenheiser, E. I. (1951). The versalog slide rule: An instruction manual. Chicago, III.: The Frederick Post.
Chicago Style CitationFiesenheiser, E. I., and E. I. Fiesenheiser. The Versalog Slide Rule: An Instruction Manual. Chicago, III.: The Frederick Post, 1951.
MLA CitationFiesenheiser, E. I., and E. I. Fiesenheiser. The Versalog Slide Rule: An Instruction Manual. Chicago, III.: The Frederick Post, 1951.
Warning: These citations may not always be 100% accurate.