Habig, J. C. (1977). A comparative study of some numerical methods for the solution of a class of ordinary differential equations generalizing the restricted three body problem equations [microform]. Photoduplication Service, University of the Philippines Library.
Chicago-viite (17. p.)Habig, John Christian. A Comparative Study of Some Numerical Methods for the Solution of a Class of Ordinary Differential Equations Generalizing the Restricted Three Body Problem Equations [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1977.
MLA-viite (9. p.)Habig, John Christian. A Comparative Study of Some Numerical Methods for the Solution of a Class of Ordinary Differential Equations Generalizing the Restricted Three Body Problem Equations [microform]. Photoduplication Service, University of the Philippines Library, 1977.