Παραπομπή σε μορφή APA (7η εκδ.)

Elmqvist, N., & Archives, T. P. S. U. C. (2007). P: A taxonomy of 3D occlusion management techniques. https://engineering.purdue.edu/~elm/projects/occlusion/occ-mgt.pdf.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Elmqvist, Niklas, και The Pennsylvania State University CiteSeerX Archives. "P: A Taxonomy of 3D Occlusion Management Techniques." Https://engineering.purdue.edu/~elm/projects/occlusion/occ-mgt.pdf 2007.

Παραπομπή σε μορφή MLA (9th εκδ.)

Elmqvist, Niklas, και The Pennsylvania State University CiteSeerX Archives. "P: A Taxonomy of 3D Occlusion Management Techniques." Https://engineering.purdue.edu/~elm/projects/occlusion/occ-mgt.pdf, 2007.