Diethelm, W., & Diethelm, M. (1974). Form + communication: Way to visualization. ABC Verlag.
芝加哥风格引文Diethelm, Walter, 与 Marion Diethelm. Form + Communication: Way to Visualization. Zurich: ABC Verlag, 1974.
MLA引文Diethelm, Walter, 与 Marion Diethelm. Form + Communication: Way to Visualization. ABC Verlag, 1974.
警告：这些引文格式不一定是100％准确.