Spectrum van de Nederlandse Letterkunde, 22 : Werkmansboekje sociale bewogenheid in de literatuur rond 1900
Marcel Charles Antoon van der Heijden
Het Spectrum, 1971
 Buku Teks
Convict workers: reinterpreting Australia's past / edited by Stephen Nicholas
Cambridge University Press, 1989
 Buku Teks
Classes, power, and conflict: classical and contemporary debates
edited by Anthony Giddens and David Held
Macmillan, 1992
 Buku Teks
Barradas, Gerald
Scientific capitalism / Gerald Barradas
Pageant Press , 1956
 Buku Teks
Kerr, Clark
Work in America / Clark Kerr
Van Nostrand Teinhold, 1979
 Buku Teks