Não informado. (2010). Research Correspondence: A supplement issued with research. [s.n.].
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Research Correspondence: A Supplement Issued with Research. London: [s.n.], 2010.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Research Correspondence: A Supplement Issued with Research. [s.n.], 2010.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.