The last page in a research paper is titled Works Cited (a bibliography), which lists all the sources you used.
www.easybib.com or www.NoodlesTools.com will set this up for you.
Grammar
Present Perfect:
Present Perfect Simple Exercise
Present Perfect Progressive (Continuous): http://www.englisch-hilfen.de/en/exercises/tenses/present_perfect_progressive_statements.htm
Past Progressive (Continuous): http://www.englishpage.com/verbpage/pastcontinuous.html
Passive/Active Verbs: http://www.perfect-english-grammar.com/support-files/passive_verbs_with_two_objects.pdf
Phrasal Verbs: http://www.englisch-hilfen.de/en/exercises/structures/phrasal_verbs_sentences.htm
Relative Clauses: http://www.perfect-english-grammar.com/relative-clauses.html
Prepositions: http://englishforeveryone.org/PDFs/Prepositions_of_Place_2.pdf
Relative Pronouns Passive/Active Voice: http://www.biomedicaleditor.com/active-voice.html
Future Continuous/ Progressive: http://www.englishpage.com/verbpage/futurecontinuous.html
Reported/Direct Speech: http://www.englishbaby.com/lessons/grammar/direct_vs_reported_speechZero Conditional: http://www.perfect-english-grammar.com/zero-conditional.html
First Conditional: http://www.perfect-english-grammar.com/first-conditional.html
Second Conditional: http://www.perfect-english-grammar.com/second-conditional.html
Third Conditional: http://www.perfect-english-grammar.com/third-conditional.html