Lua APA (7ú heag.)

Tonne, H. A. 1. (1949). Methods of teaching business subjects. Gregg Pub.

Lua i Stíl Chicago (17ú heag.)

Tonne, Herbert Arthur 1902. Methods of Teaching Business Subjects. New York: Gregg Pub, 1949.

Lua MLA (9ú heag.)

Tonne, Herbert Arthur 1902. Methods of Teaching Business Subjects. Gregg Pub, 1949.

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