APA

Covello L., . (1958). The heart is the teacher. New York: McGraw-Hill.

Chicago

Covello Leonard, . 1958. The heart is the teacher. New York: McGraw-Hill.

Harvard

Covello L., . (1958). The heart is the teacher. New York: McGraw-Hill.

MLA

Covello Leonard, . The heart is the teacher. New York: McGraw-Hill. 1958.