Gaya APA
Dobelli, R.
(2021).
The Art Of Thinking Clearly
(
Cetakan Keenam)
.
Jakarta:
PT Gramedia Pustaka Utama.
Gaya MLA
Dobelli, Rolf.
"The Art Of Thinking Clearly".
Cetakan Keenam
Jakarta:
PT Gramedia Pustaka Utama,
2021.
Teks.