Tohutoro APA (7th ed.)
Olaf, E., & Schenk, R. (2003). Erwin Olaf: Silver. Erwin Olaf BV.
Tohutoru Kātū Chicago (17th ed.)
Olaf, Erwin, me Ruud Schenk. Erwin Olaf: Silver. Amsterdam: Erwin Olaf BV, 2003.
Tohutoro MLA (9th ed.)
Olaf, Erwin, me Ruud Schenk. Erwin Olaf: Silver. Erwin Olaf BV, 2003.
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