Gray, G. D. B. (1947). Soviet Land: The country, its people and their work (1. publ.). Black.
Citazione stile Chigago Style (17a edizione)Gray, G. D. B. Soviet Land: The Country, Its People and Their Work. 1. publ. London: Black, 1947.
Citatione MLA (9a ed.)Gray, G. D. B. Soviet Land: The Country, Its People and Their Work. 1. publ. Black, 1947.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.