Dyfyniad APA

Szymkowicz, A. (2013). The why overhead (1st print., trade ed.). Original Works Pub..

Dyfyniad Arddull Chicago

Szymkowicz, Adam. The Why Overhead. 1st print., trade ed. San Bernardino, CA: Original Works Pub., 2013.

Dyfyniad MLA

Szymkowicz, Adam. The Why Overhead. 1st print., trade ed. Original Works Pub., 2013.

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