Gaya APA

al.], T, P, [. (2015). Optimal Production Systems in Highland Communities in Chiang Mai Province (5 ( 2015 )). : Elsevier.

Gaya MLA

al.], Tinnarat, Pitakpongjaroen, [et. "Optimal Production Systems in Highland Communities in Chiang Mai Province". 5 ( 2015 ) : Elsevier, 2015. e-journal.