Gaya APA

Swanson, C, P., Mallory, V, S. (1948). Commercial arithmetic a text book in consumer and business mathematics . Chicago: Chicago: Benj. H. Sanborn & Co; 1948.

Gaya MLA

Swanson, Carl, P.., Mallory, Virgil, S.. "Commercial arithmetic a text book in consumer and business mathematics". Chicago: Chicago: Benj. H. Sanborn & Co; 1948, 1948. Text.