Dyfyniad APA

Bruno, L. C., & Olendorf, D. (1997). Science & technology firsts. Gale Research.

Dyfyniad Arddull Chicago

Bruno, Leonard C., and Donna Olendorf. Science & Technology Firsts. Detroit: Gale Research, 1997.

Dyfyniad MLA

Bruno, Leonard C., and Donna Olendorf. Science & Technology Firsts. Gale Research, 1997.

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