Cita APA

Yoo, E. s. ‎. 1., Lee, Y., & Oh, K. (2017). Hangeul, the letter for the sound of nature (revised 1 st edition.). Seoul, Korea: Herwon Media.

Citación estilo Chicago

Yoo, Eun sil‏ ‎ 1974-, Yongmi Lee, y Kyungtaeg Oh. Hangeul, the Letter for the Sound of Nature. revised 1 st edition. Seoul, Korea: Herwon Media, 2017.

Cita MLA

Yoo, Eun sil‏ ‎ 1974-, Yongmi Lee, y Kyungtaeg Oh. Hangeul, the Letter for the Sound of Nature. revised 1 st edition. Seoul, Korea: Herwon Media, 2017.