Cita APA (7a ed.)

O'Brien, C. (2019). Scholastic 2020 book of world records (Fifth edition, updated 2020 edition.). Scholastic Inc..

Cita Chicago Style (17a ed.)

O'Brien, Cynthia. Scholastic 2020 Book of World Records. Fifth edition, updated 2020 edition. New York, NY: Scholastic Inc., 2019.

Cita MLA (8a ed.)

O'Brien, Cynthia. Scholastic 2020 Book of World Records. Fifth edition, updated 2020 edition. Scholastic Inc., 2019.

Precaución: Estas citas no son 100% exactas.