Sumber:

Badan Pelayanan Imigrasi

(https://www.moj.go.jp/isa/content/930005145.pdf)

Kementerian Kehakiman

(https://www.moj.go.jp/isa/content/001374132.pdf)

(https://www.moj.go.jp/isa/content/930005143.pdf)

Japanese-Language Proficiency Test Worldwide Official Website (https://www.jlpt.jp/application/overseas_list.html)

Badan Pariwisata

(https://www.mlit.go.jp/kankocho/content/001498850.pdf)

(https://www.mlit.go.jp/kankocho/content/001614077.pdf)