It is included in the volume which is entitled "Godansho Chugaisho Fukego" of 'Nihon koten bungaku taikei' (Japanese Classic Literature Systematic Edition) (the publisher is Iwanami Shoten).
「日本古典文学大系」（岩波書店）に『江談抄　中外抄　富家語』の合冊で収録。