Dyfyniad APA

National Science Development Board. (1981). 1981 SEER book: Searchers exposition on energy resources. SEER-EEC.

Dyfyniad Arddull Chicago

National Science Development Board. 1981 SEER Book: Searchers Exposition on Energy Resources. Quezon City: SEER-EEC, 1981.

Dyfyniad MLA

National Science Development Board. 1981 SEER Book: Searchers Exposition on Energy Resources. SEER-EEC, 1981.

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