Penggayaan APA
Purnomo. (2017).
Active in English .
Malang:
Polinema Press.
Chicago Style
Purnomo.
Active in English.
Malang:
Polinema Press,
2017.
Text.
MLA Style
Purnomo.
Active in English.
Malang:
Polinema Press,
2017.
Text.
Turabian Style
Purnomo.
Active in English.
Malang:
Polinema Press,
2017.
Print.