APA (7e ed.) Bronvermelding

South Metropolitan Gas Company (London, England), & Leonard William Longstaff Saint Thomas More Collection. (1931). Well Hall. s.n].

Chicago (17e ed.) Bronvermelding

South Metropolitan Gas Company (London, England), en Leonard William Longstaff Saint Thomas More Collection. Well Hall. [London?: s.n], 1931.

MLA (8e ed.) Bronvermelding

South Metropolitan Gas Company (London, England), en Leonard William Longstaff Saint Thomas More Collection. Well Hall. s.n], 1931.