APA Style
Penrose, B., Jackson, H. (1996).
Grammar and meaning: a semantic approach to english grammar: book 2 .
Jakarta:
Daya Widya.
MLA Style
Penrose, Brenda., Jackson, Howard.
"Grammar and meaning: a semantic approach to english grammar: book 2".
Jakarta:
Daya Widya,
1996.
Bahasa Inggris.