توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Klüver, B. (1991). Four Difficult Pieces: Robert Rauschenberg's collaborator at EAT documents the making of four important works from the '60s and '70s. Art in America.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Klüver, Billy. "Four Difficult Pieces: Robert Rauschenberg's Collaborator at EAT Documents the Making of Four Important Works from the '60s and '70s." Art in America 1991.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Klüver, Billy. "Four Difficult Pieces: Robert Rauschenberg's Collaborator at EAT Documents the Making of Four Important Works from the '60s and '70s." Art in America, 1991.