Cita APA

Hülsebusch, C., & Tielkes, E. (2004). Costa Rica excursion 2004: Report of a student excursion to Costa Rica, february 28-march 21, 2004. Stuttgart: University of Hohenheim.

Citación estilo Chicago

Hülsebusch, Christian, y Eric Tielkes. Costa Rica Excursion 2004: Report of a Student Excursion to Costa Rica, February 28-march 21, 2004. Stuttgart: University of Hohenheim, 2004.

Cita MLA

Hülsebusch, Christian, y Eric Tielkes. Costa Rica Excursion 2004: Report of a Student Excursion to Costa Rica, February 28-march 21, 2004. Stuttgart: University of Hohenheim, 2004.