APA引文

Schuller, R. H. (1983). Tough times never last, but tough people do (11. print.). Nelson.

Chicago Style (17th ed.) Citation

Schuller, Robert H. Tough Times Never Last, but Tough People Do. 11. print. Nashville, Tenn. [u.a.]: Nelson, 1983.

MLA引文

Schuller, Robert H. Tough Times Never Last, but Tough People Do. 11. print. Nelson, 1983.

警告：這些引文格式不一定是100％准確.