Gaya APA
Astuti, I, Y. et al (2009).
A Series Of Grammar Let's Study Adverbs (Mempelajari Kata Keterangan) .
Bandung:
Pakar Raya.
Gaya MLA
Astuti, Indri, Yuli. et al.
"A Series Of Grammar Let's Study Adverbs (Mempelajari Kata Keterangan)".
Bandung:
Pakar Raya,
2009.
Text.