Gaya APA

Hawtrey, R., Swanson, C, P. (NULL). The gold standard in theory and practice . London:: London: Longmans, Green and Co; 1948.

Gaya MLA

Hawtrey, R.G., Swanson, Carl, P.. "The gold standard in theory and practice". London:: London: Longmans, Green and Co; 1948, NULL. Text.