APA (7th ed.) Citation
Schuller, R. H. (1983). Tough times never last, but tough people do. Thomas Nelson.
Chicago Style (17th ed.) Citation
Schuller, Robert H. Tough Times Never Last, but Tough People Do. New York: Thomas Nelson, 1983.
MLA (9th ed.) Citation
Schuller, Robert H. Tough Times Never Last, but Tough People Do. Thomas Nelson, 1983.
Warning: These citations may not always be 100% accurate.