Gaya APA
Tanka, J. (1990).
INTERACTIONS I A LISTENING/SPEAKING SKILLS BOOK .
United States of America:
Mc Graw-Hil Book Company.
Gaya MLA
Tanka, Judith.
"INTERACTIONS I A LISTENING/SPEAKING SKILLS BOOK".
United States of America:
Mc Graw-Hil Book Company,
1990.
Text.