Lua APA (7ú heag.)

White, P., & Hayward, W. S. (1924). Marketing practice. Doubleday, Page & Co..

Lua i Stíl Chicago (17ú heag.)

White, Percival, agus Walter Sumner Hayward. Marketing Practice. Garden City, N.Y.: Doubleday, Page & Co., 1924.

Lua MLA (8ú heag.)

White, Percival, agus Walter Sumner Hayward. Marketing Practice. Doubleday, Page & Co., 1924.

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