Open University. (1972). Linear functionals and duality: [and] Systems of differential equations. Open University Press.
芝加哥风格引文Open University. Linear Functionals and Duality: [and] Systems of Differential Equations. Bletchley: Open University Press, 1972.
MLA引文Open University. Linear Functionals and Duality: [and] Systems of Differential Equations. Open University Press, 1972.
警告：这些引文格式不一定是100％准确.