Lua APA (7ú heag.)

BOYD, H. W. (1972). Marketing Research Text And Cases Harper W. Boyd And Ralph Westfall. Richard D. Irwin.

Lua i Stíl Chicago (17ú heag.)

BOYD, Herper W. Marketing Research Text And Cases Harper W. Boyd And Ralph Westfall. Richard D. Irwin, 1972.

Lua MLA (8ú heag.)

BOYD, Herper W. Marketing Research Text And Cases Harper W. Boyd And Ralph Westfall. Richard D. Irwin, 1972.

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