- twitter.com RLudlumAuthorOfficial account of Robert Ludlum (May 25, 1927 – March 12, 2001), the author of twenty-seven novels, each one a New York Times bestseller.
- vk.com topic-20204482_24817666…Да. Ludlum 44-3 http://www.deqtech.com/Ludlum/Products/model44-3.htm. Показать список оценивших. Александр Коршунов.