Dyfyniad APA

(1836). Scientific tracts, for the diffusion of useful knowledge .. Light & Stearns.

Dyfyniad Arddull Chicago

Scientific Tracts, for the Diffusion of Useful Knowledge .. Boston: Light & Stearns, 1836.

Dyfyniad MLA

Scientific Tracts, for the Diffusion of Useful Knowledge .. Light & Stearns, 1836.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.