APA

Blackburn R. T., Lingenfelter P. E. & University of Michigan. (1973). Assessing quality in doctoral programs: criteria and correlates of excellence / Robert T. Blackburn and Paul E. Lingenfelter. Ann Arbor, Mich: University of Michigan, School of Education, Center for the Study of Higher Education.

Chicago

Blackburn Robert T, Lingenfelter Paul E and University of Michigan. 1973. Assessing quality in doctoral programs: criteria and correlates of excellence / Robert T. Blackburn and Paul E. Lingenfelter. Ann Arbor, Mich: University of Michigan, School of Education, Center for the Study of Higher Education.

Harvard

Blackburn R. T., Lingenfelter P. E. and University of Michigan. (1973). Assessing quality in doctoral programs: criteria and correlates of excellence / Robert T. Blackburn and Paul E. Lingenfelter. Ann Arbor, Mich: University of Michigan, School of Education, Center for the Study of Higher Education.

MLA

Blackburn Robert T, Lingenfelter Paul E and University of Michigan. Assessing quality in doctoral programs: criteria and correlates of excellence / Robert T. Blackburn and Paul E. Lingenfelter. Ann Arbor, Mich: University of Michigan, School of Education, Center for the Study of Higher Education. 1973.