APA

Collingwood R., . (1924). Speculum mentis or the map of knowledge. Oxford: Clarendon Press.

Chicago

Collingwood R.G, . 1924. Speculum mentis or the map of knowledge. Oxford: Clarendon Press.

Harvard

Collingwood R., . (1924). Speculum mentis or the map of knowledge. Oxford: Clarendon Press.

MLA

Collingwood R.G, . Speculum mentis or the map of knowledge. Oxford: Clarendon Press. 1924.