Dyfyniad APA

Kittle James L. (1990). Home heating and air conditiong systems(photo) (In lần thứ 1.). American: MC Graw Hill.

Dyfyniad Arddull Chicago

Kittle James L. Home Heating and Air Conditiong Systems(photo). In lần thứ 1. American: MC Graw Hill, 1990.

Dyfyniad MLA

Kittle James L. Home Heating and Air Conditiong Systems(photo). In lần thứ 1. American: MC Graw Hill, 1990.

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