Gardiner, H. W. Lives Across Cultures: Pearson New International Edition : Cross-Cultural Human Development (5.). Pearson Education UK.
Lua i Stíl Chicago (17ú heag.)Gardiner, Harry W.;Kosmitzki. Lives Across Cultures: Pearson New International Edition : Cross-Cultural Human Development. 5. Pearson Education UK.
Lua MLA (8ú heag.)Gardiner, Harry W.;Kosmitzki. Lives Across Cultures: Pearson New International Edition : Cross-Cultural Human Development. 5. Pearson Education UK.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.