Carroll, F. B., Adams, S., & Harrison, L. M. (1957). Science in our world. John C. Winston Co..
Dyfyniad Arddull ChicagoCarroll, Franklin Bache, Sam Adams, and Lee Moncrief Harrison. Science in Our World. Philadelphia: John C. Winston Co., 1957.
Dyfyniad MLACarroll, Franklin Bache, et al. Science in Our World. John C. Winston Co., 1957.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.