National Science Development Board. (1981). 1981 SEER book: Searchers exposition on energy resources. SEER-EEC.
芝加哥风格引文National Science Development Board. 1981 SEER Book: Searchers Exposition on Energy Resources. Quezon City: SEER-EEC, 1981.
MLA引文National Science Development Board. 1981 SEER Book: Searchers Exposition on Energy Resources. SEER-EEC, 1981.
警告：这些引文格式不一定是100％准确.