Hadikoemoro, S., Pringgodigdo, G., & Suroyo, A. (1977). Report of observation visit to the private institutions of higher education in the Philippines, May 25-June 3, 1977. Directorate General for Higher Education, Dept. of Education and Culture.
Chicago-referens (17:e uppl.)Hadikoemoro, Soekisno, Girindro Pringgodigdo, och A. Suroyo. Report of Observation Visit to the Private Institutions of Higher Education in the Philippines, May 25-June 3, 1977. Jakarta, Indonesia: Directorate General for Higher Education, Dept. of Education and Culture, 1977.
MLA-referens (8:e uppl.)Hadikoemoro, Soekisno, et al. Report of Observation Visit to the Private Institutions of Higher Education in the Philippines, May 25-June 3, 1977. Directorate General for Higher Education, Dept. of Education and Culture, 1977.