APA (7th ed.) Citation

Gray, J. -., & Freund, A. M. (1907). Vom menschlichen Glück. Hirschfeld.

Chicago Style (17th ed.) Citation

Gray, John -1769, and Adolf M. Freund. Vom Menschlichen Glück. Leipzig: Hirschfeld, 1907.

MLA (8th ed.) Citation

Gray, John -1769, and Adolf M. Freund. Vom Menschlichen Glück. Hirschfeld, 1907.

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