Dyfyniad APA

(2006). Peterson's Graduate programs in the Physical sciences, Mathematics: Agricultural Sciences, the Environment and Natural resources. Lawrenceville, NJ: Thomson Peterson's.

Dyfyniad Arddull Chicago

Peterson's Graduate Programs in the Physical Sciences, Mathematics: Agricultural Sciences, the Environment and Natural Resources. Lawrenceville, NJ: Thomson Peterson's, 2006.

Dyfyniad MLA

Peterson's Graduate Programs in the Physical Sciences, Mathematics: Agricultural Sciences, the Environment and Natural Resources. Lawrenceville, NJ: Thomson Peterson's, 2006.

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