Tinjauan hukum internasional terhadap pelanggaran HAM berat berupa kejahatan terhadap kemanusiaan kepada tahanan politik di Pulau Buru = The review of international law pertaining to gross violation of human rights in the form of crimes against humanity towards political prisoners in Buru Island - Putro, Yehuda Bimo Yudanto Purwantoro (2018)