Gaya APA
Alen, R.
(2001).
The Ark Study Series Vocabulary
(
Ed.:-, Jlh. Eksp=6)
.
Singapore:
The Ark Publication.
Gaya MLA
Alen, Rosemary.
"The Ark Study Series Vocabulary".
Ed.:-, Jlh. Eksp=6
Singapore:
The Ark Publication,
2001.
Text.