De lijnen van de hand, book, [1965..1973]; (https://digital.library.unt.edu/ark:/67531/metadc667/m1/1/: accessed June 10, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .
De lijnen van de hand, book, [1965..1973]; (https://digital.library.unt.edu/ark:/67531/metadc667/m1/1/: accessed June 10, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .