Jonker, F. P. 1973: The taxonomic position of the Psilotales in the light of our knowledge of Devonian plant life. – Palaeobotanist 20: 33-38

Title	The taxonomic position of the Psilotales in the light of our knowledge of Devonian plant life
Authorship	Jonker, F. P.
Date published	1973
Volume	20
In journal	Palaeobotanist
Pages	33-38