Jelaskan Lihat juga dari Dosa berat dalam bahasa melayu

Catholic Encyclopedia entry on Sin

Catholic Encyclopedia entry on Contrition

Catechism of the Catholic Church from the official website of the Vatican

The Council of Trent - Session XIV - The fourth under the Supreme Pontiff, Julius III, celebrated on November 25, 1551 - The Most Holy Sacraments Of Penance And Extreme Unction

Excerpt from the Exomologetarion of Nicodemus the Hagiorite