Leonard, J. N. (1972). Crusaders of chemistry: Six makers of the modern world. Books for Libraries Press.
Citazione stile Chigago Style (17a edizione)Leonard, Jonathan Norton. Crusaders of Chemistry: Six Makers of the Modern World. Freeport, N.Y: Books for Libraries Press, 1972.
Citatione MLA (9a ed.)Leonard, Jonathan Norton. Crusaders of Chemistry: Six Makers of the Modern World. Books for Libraries Press, 1972.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.