South Metropolitan Gas Company (London, England), & Leonard William Longstaff Saint Thomas More Collection. (1931). Well Hall. s.n].
Čikaški stil citiranja (17. izdanje)South Metropolitan Gas Company (London, England), i Leonard William Longstaff Saint Thomas More Collection. Well Hall. [London?: s.n], 1931.
MLA način citiranja (8. izdanje)South Metropolitan Gas Company (London, England), i Leonard William Longstaff Saint Thomas More Collection. Well Hall. s.n], 1931.
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