Tracy, M., Christophel, J., Leffingwell, E., & Carter, K. (1992). The river Pierce: Sacrifice II, 13.4.90 : a document of the collaborative action / by Michael Tracy. Texts by Joan Christophel. Photographs by Keith Carter. The River Pierce Foundation.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Tracy, Michael, Joan Christophel, Edward Leffingwell, و Keith Carter. The River Pierce: Sacrifice II, 13.4.90 : A Document of the Collaborative Action / by Michael Tracy. Texts by Joan Christophel. Photographs by Keith Carter. Houston, Tex.: The River Pierce Foundation, 1992.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Tracy, Michael, et al. The River Pierce: Sacrifice II, 13.4.90 : A Document of the Collaborative Action / by Michael Tracy. Texts by Joan Christophel. Photographs by Keith Carter. The River Pierce Foundation, 1992.