APA (7th ed.) Citation

GREYSTONE. (1960). Learn world history. Greystone Press.

Chicago Style (17th ed.) Citation

GREYSTONE. Learn World History. Greystone Press, 1960.

MLA (8th ed.) Citation

GREYSTONE. Learn World History. Greystone Press, 1960.

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