The introduction should provide a concise research statement, along with clear aims and objectives that have been set out to achieve during the course of the study. It will be perfectly fine to use references in the introduction section and this will be required when briefly reviewing the literature on the topic to show what is already known, whilst presenting a justification of why a certain research project is being undertaken. Citing too many references wouldn't be recommended in this section however, as the purpose is to introduce the subject and not relying on previous evidence.