KRULIK, S. (1971). A hand book of aids for teaching junior-senior highschool mathematics. W.B. Saunders.
芝加哥风格引文KRULIK, Stephen. A Hand Book of Aids for Teaching Junior-senior Highschool Mathematics. Philadelpia: W.B. Saunders, 1971.
MLA引文KRULIK, Stephen. A Hand Book of Aids for Teaching Junior-senior Highschool Mathematics. W.B. Saunders, 1971.
警告：这些引文格式不一定是100％准确.