Não informado. (1947). South African Science. South African Association for the Advancement of Science.
Chicago-Zitierstil (17. Ausg.)Não informado. South African Science. Johannesburg, Africa do Sul: South African Association for the Advancement of Science, 1947.
MLA-Zitierstil (8. Ausg.)Não informado. South African Science. South African Association for the Advancement of Science, 1947.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.