APA (7th ed.) Citation

Froebel, F., & Michaelis, E. (2015). Autobiography of Friedrich Froebel.

Chicago Style (17th ed.) Citation

Froebel, Friedrich, and Emilie Michaelis. Autobiography of Friedrich Froebel. 2015.

MLA (9th ed.) Citation

Froebel, Friedrich, and Emilie Michaelis. Autobiography of Friedrich Froebel. 2015.

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