The CLLD version of RefLex contains separate tabs for sources and references. Sources are more numerous than references (1,432 vs. 283) because a source corresponds to the data of one language in one reference. For instance, there are five sources for Wolof.
Sources for Wolof correspond to five different references. But references can correspond to several sources. Let’s take Koelle 1963 [1854] as an example. This is a comparative wordlist that contains lexical data of 200 African languages. This means that one reference Koelle 1963 [1854] corresponds to 200 different sources.