Dyfyniad APA
ebrary, Inc, Farace, D. J., & Schöpfel, J. (2010). Grey literature in library and information studies. De Gruyter Saur.
Dyfyniad Arddull Chicago
ebrary, Inc, Dominic John Farace, and Joachim Schöpfel. Grey Literature in Library and Information Studies. Berlin ; New York: De Gruyter Saur, 2010.
Dyfyniad MLA
ebrary, Inc, et al. Grey Literature in Library and Information Studies. De Gruyter Saur, 2010.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.