Lingua Franca has been indexed to various index institutions both domestically and abroad, including the following:

Google Scholars is a service that allows users to search for textual subject matter in various publication formats. Google Scholar will help identify the most relevant research out of all academic research.

Garuda Portal. It is a gateway for tracing, indexing, abstracting, monitoring, and improving the quality standards of scientific publications in Indonesia. Portal garuda is an indexing agency from the Ministry of Education, Culture, Research, and Technology of the Republic of Indonesia.