APA
Inter National Labour Office, Inter National Labour Office, . (1969). Measuring labour productivity. : .
Chicago
Inter National Labour Office, Inter National Labour Office, . 1969. Measuring labour productivity. : .
Harvard
Inter National Labour Office, Inter National Labour Office, . (1969). Measuring labour productivity. : .
MLA
Inter National Labour Office, Inter National Labour Office, . Measuring labour productivity. : . 1969.
