Andy, P., Bryan, L., & Stover, K. (2021). Usborne Economics for Beginners. Usborne.
芝加哥风格引文Andy, Prentice, Lara Bryan, 与 Kellan Stover. Usborne Economics for Beginners. London: Usborne, 2021.
MLA引文Andy, Prentice, et al. Usborne Economics for Beginners. Usborne, 2021.
警告：这些引文格式不一定是100％准确.