Gaya APA
Heinzmann, G., Wolters, G. (2021).
Paul Lorenzen -- mathematician and logician .
Cham, Switzerland:
Springer Open.
Gaya MLA
Heinzmann, Gerhard., Wolters, Gereon.
"Paul Lorenzen -- mathematician and logician".
Cham, Switzerland:
Springer Open,
2021.
E-Book.