APA Edition Citation

Cohn B,Dr. (1939). Tables of Addition and Subtraction Logarithms with Six Decimals (IInd edition 1939.). Scientific Computing Service Limited.

Chicago Edition Citation

Cohn B,Dr. Tables of Addition and Subtraction Logarithms with Six Decimals. IInd edition 1939. London: Scientific Computing Service Limited, 1939.

MLA Edition Citation

Cohn B,Dr. Tables of Addition and Subtraction Logarithms with Six Decimals. IInd edition 1939. Scientific Computing Service Limited, 1939.