Worlock, D. R. (1977). Post Haste!: The Post Office from 1500 to the present day (1. publ., reprinted.). Nelson.
Citazione stile Chigago Style (17a edizione)Worlock, David R. Post Haste!: The Post Office from 1500 to the Present Day. 1. publ., reprinted. London [u.a.]: Nelson, 1977.
Citatione MLA (9a ed.)Worlock, David R. Post Haste!: The Post Office from 1500 to the Present Day. 1. publ., reprinted. Nelson, 1977.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.