Dyfyniad APA

Kittle James L. (1990). Home Heating & Air Conditioning Systems. American: MC Graw Hill.

Dyfyniad Arddull Chicago

Kittle James L. Home Heating & Air Conditioning Systems. American: MC Graw Hill, 1990.

Dyfyniad MLA

Kittle James L. Home Heating & Air Conditioning Systems. American: MC Graw Hill, 1990.

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