The primary reasons for citing sources in a research paper are to give credit to the authors whose work you have drawn upon and to allow readers to track down your sources, should they wish to explore further. There are many style guides for formatting citations and creating bibliographies. The ACS Style Guide is frequently used in the chemistry field, but you may be called upon to use others.
Basic reference list format for a journal article:
Caruso, R. A.; Susha, A.; Caruso, F. Multilayered Titania, Silica, and Laponite Nanoparticle Coatings on Polystyrene Colloidal
Templates and Resulting Inorganic Hollow Spheres. Chem. Mater. 2001, 13, 400–409.