Gaya APA
Walker, T, D. (2017).
Teach Like Finlandia Mengajar seperti Finlandia .
Jakata:
PT. Gramedia Widiasarana Indonesia.
Gaya MLA
Walker, Timothy, D..
"Teach Like Finlandia Mengajar seperti Finlandia".
Jakata:
PT. Gramedia Widiasarana Indonesia,
2017.
Text.