|Other Retailer||Price Checked Time||Their Price in AUD||Our Price|
|Amazon UK||4 days ago||25.95||$5.71||You save $20.24|
|Amazon US||2 days ago||16.32||$5.71||You save $10.61|
|Book Depository US||yesterday||7.28||$5.71||You save $1.57|
Philip Yungkin Lee, Ph.D. is a Senior Lecturer at the University of New South Wales in Sydney, Australia. He is the author of many language learning titles and has received a Teaching Excellence award from his university.