International Correspondence Schools. (1923). Elements of algebra, geometry and mensuration, reading working drawings, measuring instruments, precision measuring instruments, general appliances and processes, elementary mechanics, hydrostatics, pneumatics, geometry and trigonometry, natural sines, cosines, tangents and cotangents, table of powers and roots. International Textbook Co..
芝加哥风格引文International Correspondence Schools. Elements of Algebra, Geometry and Mensuration, Reading Working Drawings, Measuring Instruments, Precision Measuring Instruments, General Appliances and Processes, Elementary Mechanics, Hydrostatics, Pneumatics, Geometry and Trigonometry, Natural Sines, Cosines, Tangents and Cotangents, Table of Powers and Roots. Scranton, Pa.: International Textbook Co., 1923.
MLA引文International Correspondence Schools. Elements of Algebra, Geometry and Mensuration, Reading Working Drawings, Measuring Instruments, Precision Measuring Instruments, General Appliances and Processes, Elementary Mechanics, Hydrostatics, Pneumatics, Geometry and Trigonometry, Natural Sines, Cosines, Tangents and Cotangents, Table of Powers and Roots. International Textbook Co., 1923.