O'Connor, S., & Gupta, D. (2021). Grey Literature. Emerald Publishing Limited.
Cita Chicago Style (17a ed.)O'Connor, Steve, y Dinesh Gupta. Grey Literature. Bradford, West Yorkshire: Emerald Publishing Limited, 2021.
Cita MLA (8a ed.)O'Connor, Steve, y Dinesh Gupta. Grey Literature. Emerald Publishing Limited, 2021.
Precaución: Estas citas no son 100% exactas.