APA (7th ed.) Citation

Sale, C. J., & Wilson, G. (1986). Understanding our world: Book I. Longman Cheschire.

Chicago Style (17th ed.) Citation

Sale, Colin J., and Graene Wilson. Understanding Our World: Book I. Australia: Longman Cheschire, 1986.

MLA (9th ed.) Citation

Sale, Colin J., and Graene Wilson. Understanding Our World: Book I. Longman Cheschire, 1986.

Warning: These citations may not always be 100% accurate.