APA (7th ed.) Citation

Gooch, G. P. (1968). Studies in modern history. Books for Libraries Press.

Chicago Style (17th ed.) Citation

Gooch, George Peabody. Studies in Modern History. Freeport, N.Y: Books for Libraries Press, 1968.

MLA (9th ed.) Citation

Gooch, George Peabody. Studies in Modern History. Books for Libraries Press, 1968.