Cita APA

Draper, N., Couceiro Canalejo, J., Fryer, S., Dickson, T., Winter, D., Ellis, G., . . . North, C. (2011). Reporting climbing grades and grouping categories for rock climbing.

Citación estilo Chicago

Draper, Nick, Jorge Couceiro Canalejo, Simon Fryer, Tabitha Dickson, David Winter, Greg Ellis, Mike Hamlin, Jerry Shearman, y Chris North. Reporting Climbing Grades and Grouping Categories for Rock Climbing. 2011.

Cita MLA

Draper, Nick, et al. Reporting Climbing Grades and Grouping Categories for Rock Climbing. 2011.