Former Khmer Rouge cadres contacted by VOA Khmer claimed the recent Duch's verdict had not caused concern in former Khmer Rouge areas.
The book was handed out at Tuol Sleng, which is now a museum, the mass grave site of Choeung Ek, and in Phnom Penh's Prey Sar commune.
“Breaking The Silence” is a play designed to encourage people to talk among each other about their experiences under the Khmer Rouge.
The museum holds an archive of 4,186 prisoner confessions, 6,226 prisoner biographies and 6,147 photographs.
Many victims were disappointed with the UN-backed Khmer Rouge tribunal's sentencing of prison chief Duch last week.
International donors have praised the conclusion of the Khmer Rouge tribunal in the case against prison chief Duch.
The author of a Khmer Rouge memoir who now lives in the US is raising funds to help education in Cambodia.
Hun Sen said the courts had made an independent decision free of political influence.
Duch, whose real name is Kaing Kek Iev, faces the prospect of release at the age of 86.
Following last week's verdict of Duch, 24 of 90 victims who claimed they lost loved ones in his torture center were dismissed.
Following Duch’s verdict and sentencing, issued Monday, the EU immediately announced a contribution of $2.6 million to the tribunal.
Duch was the first to be tried under the new court, which formed in 2006 after years of wrangling between the government and the UN.