APA (7th ed.) Citation

Peake, A. S., Bosanquet, B., & Bonavia, F. (1967). Germany in the nineteenth century. Books for Libraries Press.

Chicago Style (17th ed.) Citation

Peake, Arthur S., Bernard Bosanquet, and Ferruccio Bonavia. Germany in the Nineteenth Century. Freeport, N.Y.: Books for Libraries Press, 1967.

MLA (9th ed.) Citation

Peake, Arthur S., et al. Germany in the Nineteenth Century. Books for Libraries Press, 1967.