APA-ийн эшлэл(7 дахь хэвлэлт)

DREWS, D. A. e. a. (1979). Tandem: Language in action series skills reinforcement (teacher's edition). National Textbook.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

DREWS, Donna Anthony et all. Tandem: Language in Action Series Skills Reinforcement (teacher's Edition). Skokie: National Textbook, 1979.

MLA -ийн эшлэл (9 дэх хэвлэлт)

DREWS, Donna Anthony et all. Tandem: Language in Action Series Skills Reinforcement (teacher's Edition). National Textbook, 1979.