Word Network: 참고서

A workbook or collection of practice problems for a subject.

Study; learning.

To refer to or look at something for information or evidence.

A book used as a standard work for the study of a particular subject.

The formal or systematic process of acquiring knowledge or skills. A more academic term than '공부' (study).

The action of looking at something for information or using it as a basis for one's own work.