Gaya APA
Praja, D, I., Yulianto, D.
(2011).
The Miracle of Probiotics
.
Yogyakarta:
Diva.
Gaya MLA
Praja, Deni, Indra., Yulianto, Dion.
"The Miracle of Probiotics".
Yogyakarta:
Diva,
2011.
Text.