Imperial, R. G. (1988). An Analysis of the effects of the social, cultural and scientific advances on science fiction writing in the 1930's. College of Arts and Letters, University of the Philippines Diliman.

Imperial, Romano G. An Analysis of the Effects of the Social, Cultural and Scientific Advances on Science Fiction Writing in the 1930's. Quezon City: College of Arts and Letters, University of the Philippines Diliman, 1988.

Imperial, Romano G. An Analysis of the Effects of the Social, Cultural and Scientific Advances on Science Fiction Writing in the 1930's. College of Arts and Letters, University of the Philippines Diliman, 1988.