APA-ийн эшлэл(7 дахь хэвлэлт)
Green, H., & Powell, S. (2005). Doctoral study in contemporary higher education. Society for Research into Higher Education & Open University Press.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)
Green, Howard, ба Stuart Powell. Doctoral Study in Contemporary Higher Education. Maidenhead: Society for Research into Higher Education & Open University Press, 2005.
MLA -ийн эшлэл (9 дэх хэвлэлт)
Green, Howard, ба Stuart Powell. Doctoral Study in Contemporary Higher Education. Society for Research into Higher Education & Open University Press, 2005.
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