Não informado. (1947). South African Science. South African Association for the Advancement of Science.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. South African Science. Johannesburg, Africa do Sul: South African Association for the Advancement of Science, 1947.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. South African Science. South African Association for the Advancement of Science, 1947.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.