Não informado. (2010). Research Studies of the State University of Washington. Washington State University.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Research Studies of the State University of Washington. Pullman, Wash: Washington State University, 2010.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Research Studies of the State University of Washington. Washington State University, 2010.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.