Dyfyniad APA

Smith, J. R. (1946). Industrial and commercial geography. New York: Henry Holt and co.

Dyfyniad Arddull Chicago

Smith, J. Russell. Industrial and Commercial Geography. New York: Henry Holt and co, 1946.

Dyfyniad MLA

Smith, J. Russell. Industrial and Commercial Geography. New York: Henry Holt and co, 1946.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.