Gaya APA
English in Focus: Workshop Practice. (1978).
Oxford:
Oxford University Press.
Gaya Chicago
English in Focus: Workshop Practice.
.
Oxford:
Oxford University Press,
1978.
Buku.
Gaya MLA
English in Focus: Workshop Practice.
.
Oxford:
Oxford University Press,
1978.
Buku.
Gaya Turabian
English in Focus: Workshop Practice.
Oxford:
Oxford University Press,
1978.
Buku.