APA (7th ed.) Citation

Jacobs, U., & Sutton, J. (1985). Earth calendar. Black.

Chicago Style (17th ed.) Citation

Jacobs, Una, and Jane Sutton. Earth Calendar. London: Black, 1985.

MLA (9th ed.) Citation

Jacobs, Una, and Jane Sutton. Earth Calendar. Black, 1985.

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