Mureithi, R., & Mwachala, G. [Data card 40338 for plant Compositae Psiadia punctulata, called Psiadia arabica Jaub. & Spach: Known as Okwergwena in Not recorded.
Chicago-viite (17. p.)Mureithi, Richard, ja G. Mwachala. [Data Card 40338 for Plant Compositae Psiadia Punctulata, Called Psiadia Arabica Jaub. & Spach: Known as Okwergwena in Not Recorded.
MLA-viite (8. p.)Mureithi, Richard, ja G. Mwachala. [Data Card 40338 for Plant Compositae Psiadia Punctulata, Called Psiadia Arabica Jaub. & Spach: Known as Okwergwena in Not Recorded.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.