RODRIGUES SAMPAIO, António Carlos; PIMENTA, Nuno; MACHADO, Mafalda; TEQUES, Pedro. Development and validation of the Fitness Coaching Behavior Scale: Factor structure, validity and reliability (Desarrollo y validación de la Escala de Comportamiento del Instructor de Fitness: Estructura factorial, validez y fiabilidad) (Desenvolvimento e. Retos, [S. l.], v. 37, p. 687–693, 2020. DOI: 10.47197/retos.v37i37.74344. Disponível em: https://revistaretos.org/index.php/retos/article/view/74344. Acesso em: 10 jun. 2026.