APA引文

Hustad, D. (2021). World leaders during COVID-19. Core Library.

Chicago Style (17th ed.) Citation

Hustad, Douglas. World Leaders During COVID-19. North Mankato, Minnesota: Core Library, 2021.

MLA引文

Hustad, Douglas. World Leaders During COVID-19. Core Library, 2021.

警告：這些引文格式不一定是100％准確.