Gaya APA
O'Neill, R. et al
(1990).
American Kernel Lessons: AKL Beginning Student's Book 1
(
Edisi 1)
.
Jakarta:
.
Gaya MLA
O'Neill, Robert. et al.
"American Kernel Lessons: AKL Beginning Student's Book 1".
Edisi 1
Jakarta:
,
1990.
Text.