Crinius, W., & Weinert, G. (1999). Development in World Trade 1998 - 2000.
Lua i Stíl Chicago (17ú heag.)Crinius, Wolfgang, agus Günter Weinert. Development in World Trade 1998 - 2000. Hamburg, 1999.
Lua MLA (8ú heag.)Crinius, Wolfgang, agus Günter Weinert. Development in World Trade 1998 - 2000. 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.