Style de citation APA

Schuller ,Robert H. (1988). Tough Times Never Last But Tough People Do. Orient Paperbacks.

Style de citation Chicago

Schuller ,Robert H. Tough Times Never Last But Tough People Do. Delhi: Orient Paperbacks, 1988.

Style de citation MLA

Schuller ,Robert H. Tough Times Never Last But Tough People Do. Orient Paperbacks, 1988.

Attention : ces citations peuvent ne pas être correctes à 100%.