Navarrete, N. R. (1977). The automorphism group of torsionfree abelian groups of rank two [microform]. Photoduplication Service, University of the Philippines Library.
Chicago Style (17th ed.) CitationNavarrete, Norberto R. The Automorphism Group of Torsionfree Abelian Groups of Rank Two [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1977.
MLA (9th ed.) CitationNavarrete, Norberto R. The Automorphism Group of Torsionfree Abelian Groups of Rank Two [microform]. Photoduplication Service, University of the Philippines Library, 1977.
Warning: These citations may not always be 100% accurate.