APA

Coombs P. H., . (1969). The world educational crisis. New York: Oxford University Press.

Chicago

Coombs Philip H, . 1969. The world educational crisis. New York: Oxford University Press.

Harvard

Coombs P. H., . (1969). The world educational crisis. New York: Oxford University Press.

MLA

Coombs Philip H, . The world educational crisis. New York: Oxford University Press. 1969.