Dyfyniad APA

Fraenkel, P. (1986). Water-pumping devices: A handbook for users and choosers. London: Intermediate Technology.

Dyfyniad Arddull Chicago

Fraenkel, Peter. Water-pumping Devices: A Handbook for Users and Choosers. London: Intermediate Technology, 1986.

Dyfyniad MLA

Fraenkel, Peter. Water-pumping Devices: A Handbook for Users and Choosers. London: Intermediate Technology, 1986.

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