저자 : Jonathan S. McClelland
- BA in English with a Writing Concentration, University of South Carolina, Columbia, SC, USA
- Former English instructor at Daewon Foreign Language High School
- Current debate instructor for elementary school students
- Former curriculum developer at Korean Army Intelligence School
- Expert test developer of TOEFL, TOEIC, and TEPS
저자 : Neil Armstrong
닐 암스트롱은 노팅엄 대학을 졸업했으며 영어 교육은 물론 다양한 영어교재 개발을 위해 연구 중이다.
저자 : Shin Yeongju