Dyfyniad APA

Wissenschaften, Ö. A. d., & Demography, V. I. o. Vienna yearbook of population research. Vienna.

Dyfyniad Arddull Chicago

Wissenschaften, Österreichische Akademie der, and Vienna Institute of Demography. Vienna Yearbook of Population Research. Vienna.

Dyfyniad MLA

Wissenschaften, Österreichische Akademie der, and Vienna Institute of Demography. Vienna Yearbook of Population Research. Vienna.

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