Gaya APA
English commercial practice and correspondence. (1978).
tempaterbit:
penerbit.
Gaya Chicago
English commercial practice and correspondence.
Edisi.
tempaterbit:
penerbit,
1978.
Text.
Gaya MLA
English commercial practice and correspondence.
Edisi.
tempaterbit:
penerbit,
1978.
Text.
Gaya Turabian
English commercial practice and correspondence.
tempaterbit:
penerbit,
1978.
Print.