Gaya APA
Purwoko,Ph.D., H.
(2002).
Stepping Stone : English for Junior High School Grade 1
.
Semarang:
Esis.
Gaya MLA
Purwoko,Ph.D., Herudjati.
"Stepping Stone : English for Junior High School Grade 1".
Semarang:
Esis,
2002.
Text.