Gaya APA
Apt., D, V, N, W.
(1989).
Obat-Obatan
.
Yogyakarta:
Kanisius.
Gaya MLA
Apt., Dra., V., Nuraini, Widjajanti.
"Obat-Obatan".
Yogyakarta:
Kanisius,
1989.
Text.