Howard, D. R., & Zacher, C. K. (1968). Critical studies of Sir Gawain and the Green Knight. University of Notre Dame Press.
芝加哥风格引文Howard, Donald Roy, 与 Christian K. Zacher. Critical Studies of Sir Gawain and the Green Knight. Notre Dame [Ind.]: University of Notre Dame Press, 1968.
MLA引文Howard, Donald Roy, 与 Christian K. Zacher. Critical Studies of Sir Gawain and the Green Knight. University of Notre Dame Press, 1968.
警告：这些引文格式不一定是100％准确.