Lua APA (7ú heag.)

Scheppach, R. C., & Woehlcke L., C. (1975). Transportation productivity. Lexington Books.

Lua i Stíl Chicago (17ú heag.)

Scheppach, Raymond C., agus Carl Woehlcke L. Transportation Productivity. Lexington: Lexington Books, 1975.

Lua MLA (9ú heag.)

Scheppach, Raymond C., agus Carl Woehlcke L. Transportation Productivity. Lexington Books, 1975.

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