 In a 2011 report of twenty-one international social-science book publishers that determined penetration on international markets and mention of books in international science index systems such as Cambridge Scientific Abstracts, Nova Science Publishers ranked 17th out of 21.In a 2017 ranking study of book publishers, Nova Science Publishers was ranked high on number of books published, but near the bottom for number of citations per book.A 2018 report by the same author now indicates that Nova ranks among the top half among 51 for 1.overall global standing of the company; 2.company as a factor on the market; 3.company impact on the global political and economic debate; 4.successfully distributing best-sellers; 5. impact on the scholarly community; 6.successfully distributing production to more than 50 global Worldcat libraries; 7.output during the last 5 years; 8. outstanding academic quality.