Beyer, H. O. (1961). Philippine tektites: A contribution to the study of the tektite problem in general, in the light of both past and recent discoveries. Office of Research Coordination, University of the Philippines.
Citazione stile Chigago Style (17a edizione)Beyer, Henry Otley. Philippine Tektites: A Contribution to the Study of the Tektite Problem in General, in the Light of Both Past and Recent Discoveries. Quezon City: Office of Research Coordination, University of the Philippines, 1961.
Citatione MLA (9a ed.)Beyer, Henry Otley. Philippine Tektites: A Contribution to the Study of the Tektite Problem in General, in the Light of Both Past and Recent Discoveries. Office of Research Coordination, University of the Philippines, 1961.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.