Dyfyniad APA

Lougheed, L. (2021). Barron's IELTS (Fourth edition.). Kaplan, Inc., d/b/a Barron's Educational Series.

Dyfyniad Arddull Chicago

Lougheed, Lin. Barron's IELTS. Fourth edition. New York, NY: Kaplan, Inc., d/b/a Barron's Educational Series, 2021.

Dyfyniad MLA

Lougheed, Lin. Barron's IELTS. Fourth edition. Kaplan, Inc., d/b/a Barron's Educational Series, 2021.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.