Gaya APA
JOHNSON, R. (2019).
E-BOOK ENGLISH SPEAKING COURSE FOR BEGINNERS AND INTERMEDIATE .
INGGRIS:
ENGLISHWITHRICH.
Gaya MLA
JOHNSON, RICH.
"E-BOOK ENGLISH SPEAKING COURSE FOR BEGINNERS AND INTERMEDIATE".
INGGRIS:
ENGLISHWITHRICH,
2019.
Computer File.