Cita APA (7th ed.)

Schuller, R. H. (1973). The greatest possibility thinker that ever lived. Fleming H.Revell.

Cita Chicago (17th ed.)

Schuller, Robert H. The Greatest Possibility Thinker That Ever Lived. New Jersey: Fleming H.Revell, 1973.

Cita MLA (9th ed.)

Schuller, Robert H. The Greatest Possibility Thinker That Ever Lived. Fleming H.Revell, 1973.