(2005). Ping: Curbing population growth should start with sex education. Malaya.
Citazione stile Chigago Style (17a edizione)"Ping: Curbing Population Growth Should Start with Sex Education." Malaya 2005.
Citatione MLA (9a ed.)"Ping: Curbing Population Growth Should Start with Sex Education." Malaya, 2005.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.