Dyfyniad APA

Twinning, C. (1988). Helping older people: A psychological approach. Wiley.

Dyfyniad Arddull Chicago

Twinning, Charles. Helping Older People: A Psychological Approach. Chichester, [Eng.]: Wiley, 1988.

Dyfyniad MLA

Twinning, Charles. Helping Older People: A Psychological Approach. Wiley, 1988.

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