Gaya APA
Adams, S. (2019).
The secret of smart speaking = rahasia pintar berbicara (Cet. 1).
Yogyakarta:
Psikologi Corner.
Gaya MLA
Adams, Sony.
"The secret of smart speaking = rahasia pintar berbicara".
Cet. 1
Yogyakarta:
Psikologi Corner,
2019.
Text.