APA

(2020). Guinness World Records 2021. [S.l.]: Planeta.

Chicago

2020. Guinness World Records 2021. [S.l.]: Planeta.

Harvard

(2020). Guinness World Records 2021. [S.l.]: Planeta.

MLA

Guinness World Records 2021. [S.l.]: Planeta. 2020.