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