(1968). A key to the Japanese market: Its possibilities and prospects. Tokyo: Japan Industrial Promotion Asscciation.
Dyfyniad Arddull ChicagoA Key to the Japanese Market: Its Possibilities and Prospects. Tokyo: Japan Industrial Promotion Asscciation, 1968.
Dyfyniad MLAA Key to the Japanese Market: Its Possibilities and Prospects. Tokyo: Japan Industrial Promotion Asscciation, 1968.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.