APA-viite (7. p.)

Zafra Meja̕ Carlos Alfonso, Mendoza Castaęda Franklin Andrš, Montoya Varela Paula Alejandra, & Universidad Nacional de Colombia. Facultad de Ingeniera̕. A methodology for landfill location using geographic information systems, a Colombian regional case.

Chicago-viite (17. p.)

Zafra Meja̕ Carlos Alfonso, Mendoza Castaęda Franklin Andrš, Montoya Varela Paula Alejandra, ja Universidad Nacional de Colombia. Facultad de Ingeniera̕. A Methodology for Landfill Location Using Geographic Information Systems, a Colombian Regional Case.

MLA-viite (9. p.)

Zafra Meja̕ Carlos Alfonso, et al. A Methodology for Landfill Location Using Geographic Information Systems, a Colombian Regional Case.