Lefort, G. (1964). Algebra and analysis: Problems and solutions. North-Holland Publishing.
Citazione stile Chigago Style (17a edizione)Lefort, G. Algebra and Analysis: Problems and Solutions. Amsterdam: North-Holland Publishing, 1964.
Citatione MLA (9a ed.)Lefort, G. Algebra and Analysis: Problems and Solutions. North-Holland Publishing, 1964.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.