Gaya APA
Martinet, A., Thomson, A, J. (1977).
A practical english grammar : structure drilss 1 / A.J. Thomson .
Oxford:
Oxford University Press.
Gaya MLA
Martinet, A.V., Thomson, A., J..
"A practical english grammar : structure drilss 1 / A.J. Thomson".
Oxford:
Oxford University Press,
1977.
Skripsi.