Gaya APA
Martono, Engelbertus. (1994).
English correspondence for a young generation (I).
Jakarta:
Karya Utama .
Gaya Chicago
Martono, Engelbertus.
English correspondence for a young generation.
I
Jakarta:
Karya Utama ,
1994.
Text.
Gaya MLA
Martono, Engelbertus.
English correspondence for a young generation.
I
Jakarta:
Karya Utama ,
1994.
Text.
Gaya Turabian
Martono, Engelbertus.
English correspondence for a young generation.
I
Jakarta:
Karya Utama ,
1994.
Print.