एपीए उद्धरण

Lefkowitz, N., & Cook, V. Second language learning and language teaching.

शिकागो स्टाइल उद्धरण

Lefkowitz, Natalie., और Vivian Cook. Second Language Learning and Language Teaching.

एमएलए उद्धरण

Lefkowitz, Natalie., और Vivian Cook. Second Language Learning and Language Teaching.