Não informado. (1977). South African journal of chemistry. Foundation for Education, Science and Technology.
Chicago-Zitierstil (17. Ausg.)Não informado. South African Journal of Chemistry. Pretoria, Africa do Sul: Foundation for Education, Science and Technology, 1977.
MLA-Zitierstil (8. Ausg.)Não informado. South African Journal of Chemistry. Foundation for Education, Science and Technology, 1977.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.