Dyfyniad APA

(1974). New problems to be solved 1974. Tokyo: Small and Medium Enterprise Agency.

Dyfyniad Arddull Chicago

New Problems to Be Solved 1974. Tokyo: Small and Medium Enterprise Agency, 1974.

Dyfyniad MLA

New Problems to Be Solved 1974. Tokyo: Small and Medium Enterprise Agency, 1974.

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