Gaya APA

Sop, C, T. (1991). Clinical practice on acupuncture . Pyongyang Korea: WHO Collaborating Centre for Research and Standardization in Traditional Medicine.

Gaya MLA

Sop, Choe, Tae. "Clinical practice on acupuncture". Pyongyang Korea: WHO Collaborating Centre for Research and Standardization in Traditional Medicine, 1991. print.