APA (7th ed.) Citation

American Council on the Teaching of Foreign Languages & Higgs, T. V. Teaching for proficiency, the organizing principle. Natioanl Textbook.

Chicago Style (17th ed.) Citation

American Council on the Teaching of Foreign Languages and Theodore V. Higgs. Teaching for Proficiency, the Organizing Principle. Lincolnwood, Ill: Natioanl Textbook.

MLA (9th ed.) Citation

American Council on the Teaching of Foreign Languages and Theodore V. Higgs. Teaching for Proficiency, the Organizing Principle. Natioanl Textbook.

Warning: These citations may not always be 100% accurate.