APA Style

Giyeong, Y., LIM, Y. (2017). WHY? UNITED KINGDOM . Jakarta: PT. ELEX MEDIA KOMPUTINDO.

MLA Style

Giyeong, YOO., LIM, Yeongje. "WHY? UNITED KINGDOM". Jakarta: PT. ELEX MEDIA KOMPUTINDO, 2017. Buku Pengayaan Khusus Siswa.