Citação norma APA

Gutiérrez García, C., & Pérez-Gutiérrez, M. (2009). Study on scientific production in martial arts in Spain from 1990 to present.

Citação norma Chicago

Gutiérrez García, Carlos, y Mikel Pérez-Gutiérrez. Study On Scientific Production in Martial Arts in Spain From 1990 to Present. 2009.

Citação norma MLA

Gutiérrez García, Carlos, y Mikel Pérez-Gutiérrez. Study On Scientific Production in Martial Arts in Spain From 1990 to Present. 2009.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.