Klose, O. M. (1966). The number systems and operations of arithmetic: An explanation of the fundamental principles of mathematics which underlie the understanding and use of arithmetic, designed for in-service training of elementary school teachers and pre-service training of elementary school teacher candidates. Pergamon Press.
Chicago Style (17th ed.) CitationKlose, Orval M. The Number Systems and Operations of Arithmetic: An Explanation of the Fundamental Principles of Mathematics Which Underlie the Understanding and Use of Arithmetic, Designed for In-service Training of Elementary School Teachers and Pre-service Training of Elementary School Teacher Candidates. Oxford: Pergamon Press, 1966.
MLA (9th ed.) CitationKlose, Orval M. The Number Systems and Operations of Arithmetic: An Explanation of the Fundamental Principles of Mathematics Which Underlie the Understanding and Use of Arithmetic, Designed for In-service Training of Elementary School Teachers and Pre-service Training of Elementary School Teacher Candidates. Pergamon Press, 1966.