Cottrell, A. (2005). Guía del usuario Gretl: Gnu Regression, Econometrics and Time-series<U+000d><U+000a>. Wake Forest University.
Chicago Style (17th ed.) CitationCottrell, Allín. Guía Del Usuario Gretl: Gnu Regression, Econometrics and Time-series<U+000d><U+000a>. Nueva Carolina: Wake Forest University, 2005.
MLA (9th ed.) CitationCottrell, Allín. Guía Del Usuario Gretl: Gnu Regression, Econometrics and Time-series<U+000d><U+000a>. Wake Forest University, 2005.
Warning: These citations may not always be 100% accurate.