Ryan, J., Clemmett, S., & Perez-Avila, C. (1996). The authors reply.
Dyfyniad Arddull ChicagoRyan, John, Sue Clemmett, and Carlos Perez-Avila. The Authors Reply. 1996.
Dyfyniad MLARyan, John, Sue Clemmett, and Carlos Perez-Avila. The Authors Reply. 1996.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.