Gaya APA

Bruhns, ., Swanson, C, P. (1967). A new manual of logarithms to seven places of decimals . Chicago: Chicago: The Charles T. Powner; 1967.

Gaya MLA

Bruhns, ., Swanson, Carl, P.. "A new manual of logarithms to seven places of decimals". Chicago: Chicago: The Charles T. Powner; 1967, 1967. Text.