Dyfyniad APA

Gustafson. A Naturalist's Guide to the Texas Hill Country. Texas A&M University Press.

Dyfyniad Arddull Chicago

Gustafson. A Naturalist's Guide to the Texas Hill Country. Texas A&M University Press.

Dyfyniad MLA

Gustafson. A Naturalist's Guide to the Texas Hill Country. Texas A&M University Press.

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