Hanna, P. R., & Krug, E. A. (1953). Marketing the things we use. Scott, Foresman.
Lua i Stíl Chicago (17ú heag.)Hanna, Paul Robert, agus Edward A. Krug. Marketing the Things We Use. Chicago: Scott, Foresman, 1953.
Lua MLA (8ú heag.)Hanna, Paul Robert, agus Edward A. Krug. Marketing the Things We Use. Scott, Foresman, 1953.
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