Gaya APA

FIRST, E., SHERRILL, M. (2014). Our Story Celebrating 50 Years of EF Education First (50 CELEBRATING FIFTY YEARS). Italy: EDUCATION FIRST.

Gaya MLA

FIRST, EDUCATION., SHERRILL, MARTHA. "Our Story Celebrating 50 Years of EF Education First". 50 CELEBRATING FIFTY YEARS Italy: EDUCATION FIRST, 2014. Buku.