When referencing from a secondary source, cite the primary and secondary source in the essay text, but list only the secondary source in the reference list. Within the references list The references cited in the text are listed more fully as a combined references list and bibliography at the end of the essay. References are not listed at the bottom of the page in which they appear. This usually requires checking for the completeness and accuracy before essay submission. Single space for each item reference and double space between items.
Some sources are unpublished.
A personal communication is a unpublished letter or conversation between an authority and the writer of the essay. Other sources are in non-print form. These include television programs, videos, audio recordings, or computer media. It is just as important to cite such sources as any other reference. These sources, including electronic media references, are cited in the text of the essay in much the same manner as other references.