Gaya APA

LOUGHEED, Lin. (). Ielts: international english language testing system . : .

Gaya Chicago

LOUGHEED, Lin. Ielts: international english language testing system. : , . .

Gaya MLA

LOUGHEED, Lin. Ielts: international english language testing system. : , . .

Gaya Turabian

LOUGHEED, Lin. Ielts: international english language testing system. : , . .