Dyfyniad APA

HUDAK, J. (1980). Trees For Every Purpose. McGraw-Hill.

Dyfyniad Arddull Chicago

HUDAK, Joseph. Trees For Every Purpose. McGraw-Hill, 1980.

Dyfyniad MLA

HUDAK, Joseph. Trees For Every Purpose. McGraw-Hill, 1980.

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