APA
Lydall H F, International lobour office & International lobour office. (1975). Trade and employment. Geneva: International Labour Office.
Chicago
Lydall H F, International lobour office and International lobour office. 1975. Trade and employment. Geneva: International Labour Office.
Harvard
Lydall H F, International lobour office and International lobour office. (1975). Trade and employment. Geneva: International Labour Office.
MLA
Lydall H F, International lobour office and International lobour office. Trade and employment. Geneva: International Labour Office. 1975.
