Dyfyniad APA

Kathleen Hess. (1993). Environmental site assessment. Phase I: A basic guide. Boca Raton, USA: Lewis Publishers.

Dyfyniad Arddull Chicago

Kathleen Hess. Environmental Site Assessment. Phase I: A Basic Guide. Boca Raton, USA: Lewis Publishers, 1993.

Dyfyniad MLA

Kathleen Hess. Environmental Site Assessment. Phase I: A Basic Guide. Boca Raton, USA: Lewis Publishers, 1993.

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