Writing Improvement Project. (1977). Building English skills. McDougal, Littell & Company.
Style de citation Chicago (17e éd.)Writing Improvement Project. Building English Skills. Evanston, Illinois: McDougal, Littell & Company, 1977.
Style de citation MLA (9e éd.)Writing Improvement Project. Building English Skills. McDougal, Littell & Company, 1977.
Attention : ces citations peuvent ne pas être correctes à 100%.