Dyfyniad APA

(1978). Papers presented at the ninth assembly. Tokyo: IFPMA.

Dyfyniad Arddull Chicago

Papers Presented At the Ninth Assembly. Tokyo: IFPMA, 1978.

Dyfyniad MLA

Papers Presented At the Ninth Assembly. Tokyo: IFPMA, 1978.

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