^Rosser، Mariana V. and J Barkley Jr. (July 23, 2003). Comparative Economics in a Transforming World Economy. MIT Press. صفحة 1. ISBN978-0262182348. Chapter 1 presents definitions and basic examples of the categories used in this book: tradition, market, and command for allocative mechanisms and capitalism and socialism for ownership systems.
^Rosser، Mariana V. and J Barkley Jr. (July 23, 2003). Comparative Economics in a Transforming World Economy. MIT Press. صفحة 8. ISBN978-0262182348. Indeed, aside from the variation of ownership forms, some follow certain ideas in Marx, saying that how one class relates to another is the crucial matter rather than specifically who owns what, with true socialism involving a lack of exploitation of one class by another. This kind of argument can lead to the position that the Soviet Union was not really socialist but a form of state capitalism in which the government leaders exploited the workers.