@misc{Statistics Korea2017a,
author = {Statistics Korea},
title= {Analysis of birth, death, marriage and divorce by educational level: 2000–2015},
year = {2017a},
URL = {http://kostat.go.kr/portal/korea/kor_nw/2/2/1/index.board},
publisher = {Statistics Korea},
address = {Daejeon},
}