APA način citiranja (7. izdanje)

Schuller, R. H. (1983). Tough times never last, but tough people do. Thomas Nelson.

Čikaški stil citiranja (17. izdanje)

Schuller, Robert H. Tough Times Never Last, but Tough People Do. New York: Thomas Nelson, 1983.

MLA način citiranja (9. izdanje)

Schuller, Robert H. Tough Times Never Last, but Tough People Do. Thomas Nelson, 1983.