APA

Ojeda M. A., .A two level regression model for studying achievement of engineering students of Universidad del Valle, Cali, Colombia. : .

Chicago

Ojeda Mario Angel, .A two level regression model for studying achievement of engineering students of Universidad del Valle, Cali, Colombia. : .

Harvard

Ojeda M. A., .A two level regression model for studying achievement of engineering students of Universidad del Valle, Cali, Colombia. : .

MLA

Ojeda Mario Angel, .: . .