Kar, J. Analytical geometry of the conic sections (5th ed.). Standard law house.
芝加哥风格引文Kar, J.M. Analytical Geometry of the Conic Sections. 5th ed. Delhi: Standard law house.
MLA引文Kar, J.M. Analytical Geometry of the Conic Sections. 5th ed. Standard law house.
警告：这些引文格式不一定是100％准确.