APA

Columbia University, Columbia University, . (1971). Doctoral dissertations / The Faculties of the Graduate School of Arts and Sciences of Columbia University and the Faculties of Arts, Engineering and Applied Science, Law, Library Service and Social Work. New York,N.Y: .

Chicago

Columbia University, Columbia University, . 1971. Doctoral dissertations / The Faculties of the Graduate School of Arts and Sciences of Columbia University and the Faculties of Arts, Engineering and Applied Science, Law, Library Service and Social Work. New York,N.Y: .

Harvard

Columbia University, Columbia University, . (1971). Doctoral dissertations / The Faculties of the Graduate School of Arts and Sciences of Columbia University and the Faculties of Arts, Engineering and Applied Science, Law, Library Service and Social Work. New York,N.Y: .

MLA

Columbia University, Columbia University, . Doctoral dissertations / The Faculties of the Graduate School of Arts and Sciences of Columbia University and the Faculties of Arts, Engineering and Applied Science, Law, Library Service and Social Work. New York,N.Y: . 1971.