APA Format
Rini Hastuti. (2016.).
The Worrier's guide book : berhenti mengkhawatirkan khawatir / Rini Hastuti
. Jakarta :: Elex Media Komputindo,.
MLA Format
Rini Hastuti.
The Worrier's guide book : berhenti mengkhawatirkan khawatir / Rini Hastuti
. Jakarta :: Elex Media Komputindo,, 2016.
Chicago Format
Rini Hastuti. The Worrier's guide book : berhenti mengkhawatirkan khawatir / Rini Hastuti. Jakarta :: Elex Media Komputindo,, 2016..