APA

Nightingale E., . (1969). This is Earl Nightingale. Garden City, N.Y: Published in co-operation with J. G. Ferguson Pub. Co. by Doubleday.

Chicago

Nightingale Earl, . 1969. This is Earl Nightingale. Garden City, N.Y: Published in co-operation with J. G. Ferguson Pub. Co. by Doubleday.

Harvard

Nightingale E., . (1969). This is Earl Nightingale. Garden City, N.Y: Published in co-operation with J. G. Ferguson Pub. Co. by Doubleday.

MLA

Nightingale Earl, . This is Earl Nightingale. Garden City, N.Y: Published in co-operation with J. G. Ferguson Pub. Co. by Doubleday. 1969.