Style de citation APA (7e éd.)
Cuthbertson, K., & Richards, P. <An> econometric study of the demand for first and second class inland letter services.
Style de citation Chicago (17e éd.)
Cuthbertson, K., et P. Richards. <An> Econometric Study of the Demand for First and Second Class Inland Letter Services.
Style de citation MLA (9e éd.)
Cuthbertson, K., et P. Richards. <An> Econometric Study of the Demand for First and Second Class Inland Letter Services.
Attention : ces citations peuvent ne pas être correctes à 100%.