Gaya APA
Jordaan, G., Lategan, L. (2010).
Modelling as Research Methodology .
Bloemfontein:
Sun Media Bloemfontein.
Gaya MLA
Jordaan, G.D.., Lategan, L.O.K..
"Modelling as Research Methodology".
Bloemfontein:
Sun Media Bloemfontein,
2010.
Computer File.