Gierstberg, F. (2000). Positions, Attitudes, Actions: Engagement in de fotografie ; Social and political commitment in photography. Idea Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGierstberg, Frits. Positions, Attitudes, Actions: Engagement in De Fotografie ; Social and Political Commitment in Photography. Amsterdam: Idea Books, 2000.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGierstberg, Frits. Positions, Attitudes, Actions: Engagement in De Fotografie ; Social and Political Commitment in Photography. Idea Books, 2000.
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