Gaya APA

Allen, R, E, S., Wiles, J, L. (2013). How Older People Position Their Late-Life Childlessness: A Qualitative Study . : Wiley-Blackwell.

Gaya MLA

Allen, Ruth, E., S.., Wiles, Janine, L.. "How Older People Position Their Late-Life Childlessness: A Qualitative Study". : Wiley-Blackwell, 2013. e-journal.