Gaya APA
LEO, SUTANTO. (2007).
Essay Writing (1).
Yogyakarta:
RUAS.
Gaya Chicago
LEO, SUTANTO.
Essay Writing .
1
Yogyakarta:
RUAS,
2007.
UMUM.
Gaya MLA
LEO, SUTANTO.
Essay Writing .
1
Yogyakarta:
RUAS,
2007.
UMUM.
Gaya Turabian
LEO, SUTANTO.
Essay Writing .
1
Yogyakarta:
RUAS,
2007.
UMUM.