Paul, E. R. (1993). The Life and Works of J. C. Kapteyn: An Annotated Translation with Preface and Introduction by E. Robert Paul. Springer Netherlands. https://doi.org/10.1007/978-94-011-1940-5
Chicago-Zitierstil (17. Ausg.)Paul, E. Robert. The Life and Works of J. C. Kapteyn: An Annotated Translation with Preface and Introduction by E. Robert Paul. Dordrecht: Springer Netherlands, 1993. https://doi.org/10.1007/978-94-011-1940-5.
MLA-Zitierstil (9. Ausg.)Paul, E. Robert. The Life and Works of J. C. Kapteyn: An Annotated Translation with Preface and Introduction by E. Robert Paul. Springer Netherlands, 1993. https://doi.org/10.1007/978-94-011-1940-5.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.