Cramer, T. (2009). Provenance determination of archaeological marbles as an example for the use of geoscientific methods. Universidad Pedagógica y Tecnológica de Colombia - UPTC.
Lua i Stíl Chicago (17ú heag.)Cramer, Thomas. Provenance Determination of Archaeological Marbles as an Example for the Use of Geoscientific Methods. Universidad Pedagógica y Tecnológica de Colombia - UPTC, 2009.
Lua MLA (9ú heag.)Cramer, Thomas. Provenance Determination of Archaeological Marbles as an Example for the Use of Geoscientific Methods. Universidad Pedagógica y Tecnológica de Colombia - UPTC, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.