Gaya APA
Hill, L.
(1989).
Word Power 1500 : Vocabulary Test and Exercises
(
ed. 1)
.
Hongkong:
Oxford University Press.
Gaya MLA
Hill, L.A..
"Word Power 1500 : Vocabulary Test and Exercises".
ed. 1
Hongkong:
Oxford University Press,
1989.
Text.