The New Cambridge bibliography of English literature Vol. 4; 1900-1950
edited by I.R. Willison
Cambridge University Press, 1972
 Buku Referensi
Green, H. M.
Australian literature : 1900-1950
Melbourne University Press, 1951
 Buku Teks SO
Fifty years of Indian parliament
edited by G.C. Malhotra
Lok Sabha Secretariiat, 2002.
 Buku Teks SO
Hazeu, H.A.G.
Fifty years of electronic components 1921-1971
N.V. Philips Gloeilampenfabrieken, 1971
 Buku Teks
Rice, Thomas Jackson
English fiction, 1900-1950 : a guide to information sources
Gale Research Company, 1983
 Buku Referensi