O'Brien, J. A. (1968). Family planning in a exploding population. Hawthorn Books.
Citazione stile Chigago Style (17a edizione)O'Brien, John Anthony. Family Planning in a Exploding Population. Nueva York: Hawthorn Books, 1968.
Citatione MLA (9a ed.)O'Brien, John Anthony. Family Planning in a Exploding Population. Hawthorn Books, 1968.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.