APA (7th ed.) Citation

Schouten, J. A., & Kulk, W. v. d. (1969). Pfaff's problem and its generalizations ([Nachdr. der Ausg.] Oxford 1949.). Chelsea Publ. Co.

Chicago Style (17th ed.) Citation

Schouten, Jan A., and Wouter van der Kulk. Pfaff's Problem and Its Generalizations. [Nachdr. der Ausg.] Oxford 1949. New York: Chelsea Publ. Co, 1969.

MLA (9th ed.) Citation

Schouten, Jan A., and Wouter van der Kulk. Pfaff's Problem and Its Generalizations. [Nachdr. der Ausg.] Oxford 1949. Chelsea Publ. Co, 1969.