APA (7th ed.) Citation

(2018). Primary learner's dictionary (3rd edition.). HarperCollins Publishers.

Chicago Style (17th ed.) Citation

Primary Learner's Dictionary. 3rd edition. Glasgow: HarperCollins Publishers, 2018.

MLA (9th ed.) Citation

Primary Learner's Dictionary. 3rd edition. HarperCollins Publishers, 2018.

Warning: These citations may not always be 100% accurate.