* Foreign related literature: This encompasses research studies, articles, books, and other publications produced outside the researcher's country. It provides a broader perspective, revealing international trends, best practices, and diverse methodologies relevant to the research topic. It's crucial for showing how your work fits into a global context and avoids a narrow, localized view.
* Local related literature: This includes research and publications produced within the researcher's country. It offers valuable insights into the specific context, cultural nuances, and unique challenges related to the research topic within that particular geographic and socio-political setting. It's vital for grounding the study in the local reality and demonstrating its relevance to the specific community or population being investigated.
Essentially, the combination of both foreign and local related literature strengthens the research by providing a comprehensive understanding of the topic, acknowledging both global trends and local specifics. The balance between the two depends on the research question and the nature of the study. A study focused on a highly localized issue might heavily emphasize local literature, while a study addressing a global phenomenon might place more emphasis on foreign literature.