Liukkonen, Petri. "Harold Robbins". Books and Writers (kirjasto.sci.fi). Finland: Kuusankoski Public Library. Archived from the original on October 14, 2013.
Liukkonen, Petri. "Harold Robbins". Books and Writers (kirjasto.sci.fi). Finland: Kuusankoski Public Library. Archived from the original on October 14, 2013.