APA

Nielsen W. A., . (1972). The big foundations. New York: Columbia University Press.

Chicago

Nielsen Waldemar A, . 1972. The big foundations. New York: Columbia University Press.

Harvard

Nielsen W. A., . (1972). The big foundations. New York: Columbia University Press.

MLA

Nielsen Waldemar A, . The big foundations. New York: Columbia University Press. 1972.