Dyfyniad APA

Youmans, W. J. Appleton's popular science monthly. D. Appleton and Co.

Dyfyniad Arddull Chicago

Youmans, William Jay. Appleton's Popular Science Monthly. New York: D. Appleton and Co.

Dyfyniad MLA

Youmans, William Jay. Appleton's Popular Science Monthly. D. Appleton and Co.

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