Gaya APA
Riyanto, Slamet. (2016).
TOIEC Preparation (ed.1).
Medan:
ANDI Yogyakarta.
Gaya Chicago
Riyanto, Slamet.
TOIEC Preparation.
ed.1
Medan:
ANDI Yogyakarta,
2016.
SASTRA.
Gaya MLA
Riyanto, Slamet.
TOIEC Preparation.
ed.1
Medan:
ANDI Yogyakarta,
2016.
SASTRA.
Gaya Turabian
Riyanto, Slamet.
TOIEC Preparation.
ed.1
Medan:
ANDI Yogyakarta,
2016.
SASTRA.