Schouten, J. A. n. 1., & Kulk, W. v. d. (1949). Pfaff's problem and its generalizations. Oxford: Clarendon.
Chicago Style CitationSchouten, Jan Arnoldus n. 1883, and Wouter van der Kulk. Pfaff's Problem and Its Generalizations. Oxford: Clarendon, 1949.
MLA CitationSchouten, Jan Arnoldus n. 1883, and Wouter van der Kulk. Pfaff's Problem and Its Generalizations. Oxford: Clarendon, 1949.
Warning: These citations may not always be 100% accurate.