APA (7th ed.) Citation

Janssen, J. M. A. (1950). On the ideal lifetime of the Egyptians. [s.n.].

Chicago Style (17th ed.) Citation

Janssen, Jozef M. A. On the Ideal Lifetime of the Egyptians. [S.l.]: [s.n.], 1950.

MLA (9th ed.) Citation

Janssen, Jozef M. A. On the Ideal Lifetime of the Egyptians. [s.n.], 1950.