Matthews, J.F. 2004: Portulaca Linnaeus, pp. 496-501. – In: Anónimo, Flora of North America north of Mexico 4. – New York

Title	Portulaca Linnaeus.
Authorship	Matthews, J.F.
Date published	2004
In book	Anónimo 2004: Flora of North America north of Mexico 4. – New York
Pages	496-501