Gaya APA
Porta, D, D., Diani, M. (2020).
Social movements : an introduction (Third Edition).
Singapore:
Wiley-Blackwell.
Gaya MLA
Porta, Donatella, Della., Diani, Mario.
"Social movements : an introduction".
Third Edition
Singapore:
Wiley-Blackwell,
2020.
Buku.