Postmodern documentary

I found this article from internet.
This is a 'PDF' file, so that I could not find the name of the author nor the book title.
If you want to read the whole article, go to http://newkularfamily.org/mediareadings/postmodernistdocumentary.pdf

"Postmodernist documentary holds a unique position among postmodern textsbecause of its ability to convey a diversity of visual, aural, temporal, and spatial dialecticsand convergences through a single, dynamic medium. The viewer interprets the subjectbased upon images, sounds, geographies, and modes that are reflective of a broader, yetschizophrenic understanding of the world; a condition that film and video represent mostrealistically.
It makes sense to argue that all video documentaries are postmodern experiences. Regardless of the filmmaker’s vision or mode of presentation, the viewer experiences theworld through a series of images and sounds, going on virtual safaris, taking trips back intime, and cultivating a culturally diverse circle of friends. However, there are certain documentaries that can be more specifically cited as postmodern, as their aesthetic lies deeper in Postmodernism’s opposition to the truth and authorship sought by Modernist documentarians."