Crump, J.I. (1970/1996). Chan-kuo Ts'e. Ann Arbor, Michigan: Center for Chinese Studies, University of Michigan. p. 139.
Crump, J.I. (1970/1996). Chan-kuo Ts'e. Ann Arbor, Michigan: Center for Chinese Studies, University of Michigan. p. 162.
books.google.com
Sun, Bin; Dim Cheuk Lau and Roger T. Ames (2003). Sun Bin: The Art of War. Albany, NY: SUNY Press. p. 13.La referencia utiliza el parámetro obsoleto |coautor= (ayuda)