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
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
Celebrating indonesia : fifty years with the ford foundation 1953-2003
Ford foundation , 2003
 Buku Referensi