Dyfyniad APA

(1978). In the spirit of enterprise: From the Rolex Awards. San Francisco: W. H. Freeman and Company.

Dyfyniad Arddull Chicago

In the Spirit of Enterprise: From the Rolex Awards. San Francisco: W. H. Freeman and Company, 1978.

Dyfyniad MLA

In the Spirit of Enterprise: From the Rolex Awards. San Francisco: W. H. Freeman and Company, 1978.

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