APA-viite (7. p.)

Grenfell, D. The Angolan papers of David Grenfell. University of York, Photographic Dept..

Chicago-viite (17. p.)

Grenfell, David. The Angolan Papers of David Grenfell. [York, England]: University of York, Photographic Dept..

MLA-viite (8. p.)

Grenfell, David. The Angolan Papers of David Grenfell. University of York, Photographic Dept..