Layard, R., Nickell, S., & Shaw, G. (1988). The Case for Subsidising Extra Jobs. Elgar.
Lua i Stíl Chicago (17ú heag.)Layard, R., S. Nickell, agus G. Shaw. The Case for Subsidising Extra Jobs. Elgar, 1988.
Lua MLA (9ú heag.)Layard, R., et al. The Case for Subsidising Extra Jobs. Elgar, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.