(ITU, 2013; Kincaid, 2010; Taylor,

(
ITU, 2013; Kincaid, 2010; Taylor, 2012; Smith, 2012)

ผลลัพธ์ (อังกฤษ) 2:

(
ITU, 2013th; Kincaid, 2 010; Taylor, 2012; Smith, 2 012).