Marshall, C. C., & Goodyear, S. H. (1910). Inductive commercial arithmetic: A practical treatise on business computation. Goodyear-Marshall Pub. Co..
Lua i Stíl Chicago (17ú heag.)Marshall, Carl C., agus Samuel Horatio Goodyear. Inductive Commercial Arithmetic: A Practical Treatise on Business Computation. Cedar Rapids, Ia.: Goodyear-Marshall Pub. Co., 1910.
Lua MLA (8ú heag.)Marshall, Carl C., agus Samuel Horatio Goodyear. Inductive Commercial Arithmetic: A Practical Treatise on Business Computation. Goodyear-Marshall Pub. Co., 1910.
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