Gaya APA

WILLIS, D. (2003). RULES, PATTERNS AND WORDS: GRAMMAR AND LEXIS IN ENGLISH LANGUAGE TEACHING (CET.4). United Kingdom: CAMBRIDGE UNIVERSITY PRESS.

Gaya MLA

WILLIS, DAVE. "RULES, PATTERNS AND WORDS: GRAMMAR AND LEXIS IN ENGLISH LANGUAGE TEACHING". CET.4 United Kingdom: CAMBRIDGE UNIVERSITY PRESS, 2003. Text.