Gaya APA
'Ainy, U, Q.
(2016).
Happiness Laboratory : Meramu Kebahagiaan Hakiki
.
Jakarta:
PT. Elex Media Komputindo.
Gaya MLA
'Ainy, Urfa, Qurrota.
"Happiness Laboratory : Meramu Kebahagiaan Hakiki".
Jakarta:
PT. Elex Media Komputindo,
2016.
Text.