Dyfyniad APA

De los Santos, P. V., & Carmona Valdés, S. E. (2017). Prevalence of depression in elderly men and women in Mexico and risk factors.

Dyfyniad Arddull Chicago

De los Santos, Perla Vanessa, y Sandra Emma Carmona Valdés. Prevalence of Depression in Elderly Men and Women in Mexico and Risk Factors. 2017.

Dyfyniad MLA

De los Santos, Perla Vanessa, y Sandra Emma Carmona Valdés. Prevalence of Depression in Elderly Men and Women in Mexico and Risk Factors. 2017.

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