Ranson, Baldwin (2008). "Confronting Foster's Wildest Claim: Only the Instrumental Theory of Value Can Be applied". Journal of Economic Issues. 42 (2): 537–44. doi:10.1080/00213624.2008.11507163. S2CID157465132.
Ranson, Baldwin (2008). "Confronting Foster's Wildest Claim: Only the Instrumental Theory of Value Can Be applied". Journal of Economic Issues. 42 (2): 537–44. doi:10.1080/00213624.2008.11507163. S2CID157465132.