Dyfyniad APA

Ulloa, A., Aguilar, T., Goicoechea, C., & Ramírez, R. (2011). DESCRIPTION, CLASSIFICATION AND GEOLOGICAL ASPECTS OF THE KARSTIC REGIONS OF COSTA RICA.

Dyfyniad Arddull Chicago

Ulloa, Andrés, Teresita Aguilar, Carlos Goicoechea, y Ronald Ramírez. DESCRIPTION, CLASSIFICATION AND GEOLOGICAL ASPECTS OF THE KARSTIC REGIONS OF COSTA RICA. 2011.

Dyfyniad MLA

Ulloa, Andrés, Teresita Aguilar, Carlos Goicoechea, y Ronald Ramírez. DESCRIPTION, CLASSIFICATION AND GEOLOGICAL ASPECTS OF THE KARSTIC REGIONS OF COSTA RICA. 2011.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.