Παραπομπή σε μορφή APA (7η εκδ.)

Lubell, H. (1991). The informal sector in the 1980s and 1990s. Development Centre of the Organisation for Economic Co-operation and Development ; OECD Publications and Information Centre, distributor].

Παραπομπή σε μορφή Chicago (17η εκδ.)

Lubell, Harold. The Informal Sector in the 1980s and 1990s. Paris : [Washington, D.C.: Development Centre of the Organisation for Economic Co-operation and Development ; OECD Publications and Information Centre, distributor], 1991.

Παραπομπή σε μορφή MLA (9th εκδ.)

Lubell, Harold. The Informal Sector in the 1980s and 1990s. Development Centre of the Organisation for Economic Co-operation and Development ; OECD Publications and Information Centre, distributor], 1991.