Dyfyniad APA

Wavwick, D. (1975). The sample survey: Theory & practice. McGraw Hill.

Dyfyniad Arddull Chicago

Wavwick, D. The Sample Survey: Theory & Practice. NewYork: McGraw Hill, 1975.

Dyfyniad MLA

Wavwick, D. The Sample Survey: Theory & Practice. McGraw Hill, 1975.

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