APA-viite

Peraldo, G., & Badilla, E. (2011). The use of landscape tracing as an educational technique in geomorphological studies.

Chicago-tyylinen lähdeviittaus

Peraldo, Giovanni, ja Elena Badilla. The Use of Landscape Tracing As an Educational Technique in Geomorphological Studies. 2011.

MLA-viite

Peraldo, Giovanni, ja Elena Badilla. The Use of Landscape Tracing As an Educational Technique in Geomorphological Studies. 2011.

Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.