Kanjana Nitaya. 1991. A graphical user interface for the gisforman spatial wood supply model. Brunswick:University of New Brunswick;
Kanjana Nitaya. (1991) A graphical user interface for the gisforman spatial wood supply model (รายงานผลงานวิจัย). University of New Brunswick:Brunswick.
Kanjana Nitaya. A graphical user interface for the gisforman spatial wood supply model. Brunswick:University of New Brunswick, 1991.
Kanjana Nitaya. (1991) A graphical user interface for the gisforman spatial wood supply model (รายงานผลงานวิจัย). University of New Brunswick:Brunswick.