Cita APA (7th ed.)

Thomas, H. (1950). Living biographies of great scientists. Perma Giants.

Cita Chicago (17th ed.)

Thomas, Henry. Living Biographies of Great Scientists. Garden city, N.Y.: Perma Giants, 1950.

Cita MLA (9th ed.)

Thomas, Henry. Living Biographies of Great Scientists. Perma Giants, 1950.