Lombardo, T. J. (1987). The reciprocity of perceiver and environment. Lawrence Erlbaum Assoc..
Dyfyniad Arddull ChicagoLombardo, Thomas J. The Reciprocity of Perceiver and Environment. Hillsdale: Lawrence Erlbaum Assoc., 1987.
Dyfyniad MLALombardo, Thomas J. The Reciprocity of Perceiver and Environment. Lawrence Erlbaum Assoc., 1987.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.