Humphrey, M., & Humphrey, H. (1993). Inter-country adoption: Practical experiences. Tavistock/Routledge.
Lua i Stíl Chicago (17ú heag.)Humphrey, Michael, agus Heather Humphrey. Inter-country Adoption: Practical Experiences. London: Tavistock/Routledge, 1993.
Lua MLA (9ú heag.)Humphrey, Michael, agus Heather Humphrey. Inter-country Adoption: Practical Experiences. Tavistock/Routledge, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.