Sibal, M. (1977). Circular sobre roturaciones. University of the Philippines Library.
Chicago Style (17th ed.) CitationSibal, Marcelo. Circular Sobre Roturaciones. Quezon City: University of the Philippines Library, 1977.
MLA (9th ed.) CitationSibal, Marcelo. Circular Sobre Roturaciones. University of the Philippines Library, 1977.
Warning: These citations may not always be 100% accurate.