Apil, F. W., Miranda, F. E., & Villanueva, A. F. R. (1983). Abstracts and summaries of geological investigations. Bureau of Mines and Geo-sciences.
Chicago Style (17. basım) AtıfApil, Fay Wangdali, Federico E. Miranda, ve Abner Fe R. Villanueva. Abstracts and Summaries of Geological Investigations. Baguio City, Philippines: Bureau of Mines and Geo-sciences, 1983.
MLA (9th ed.) AtıfApil, Fay Wangdali, et al. Abstracts and Summaries of Geological Investigations. Bureau of Mines and Geo-sciences, 1983.
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