Hoy, W. (1942). The Chinese six companies: A short, general historical resumé of its origin, function, and importance in the life of the California Chinese. San Francisco, Calif.: Chinese Consolidated Benevolent Association (Chinese six companies).

Hoy, William. The Chinese Six Companies: A Short, General Historical Resumé of Its Origin, Function, and Importance in the Life of the California Chinese. San Francisco, Calif.: Chinese Consolidated Benevolent Association (Chinese six companies), 1942.

Hoy, William. The Chinese Six Companies: A Short, General Historical Resumé of Its Origin, Function, and Importance in the Life of the California Chinese. San Francisco, Calif.: Chinese Consolidated Benevolent Association (Chinese six companies), 1942.