1 2 3 1 Douglas H.Brown, Teaching By Principle, New York:Longman Inc, 1994, p.24 2 Douglas H.Brown and Jeremy Harmer, The Principle of EFL Teaching, Boston: Yess Publisher, 1983, p.231 3 Douglas H.Brown, Sweth John, Sam Sue and Muhammad Ahmed, Teaching English in The Classroom, Bangkok:ELT Press, 2012, p.24
1. 1231Douglas H.Brown, Teaching By Principle, New York:Longman
Inc, 1994, p.24 Douglas H.Brown and Jeremy Harmer, The Principle of
EFL Teaching, Boston: Yess Publisher, 1983, p.231 3 Douglas
H.Brown, Sweth John, Sam Sue and Muhammad Ahmed, Teaching English
in The Classroom, Bangkok:ELT Press, 2012, p.24 2
