(1970). Biology of man in Africa: Warsaw meeting 24th-27th of June 1968. Państwowe Wydawnictwo Naukowe.
Citazione stile Chigago Style (17a edizione)Biology of Man in Africa: Warsaw Meeting 24th-27th of June 1968. Wrocław: Państwowe Wydawnictwo Naukowe, 1970.
Citatione MLA (9a ed.)Biology of Man in Africa: Warsaw Meeting 24th-27th of June 1968. Państwowe Wydawnictwo Naukowe, 1970.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.