Holm-Nielsen, R L B & Haynes, R R 2003, Najadaceae . in J A Steyermark, P E Berry, K Yatskievych & B K Holst (eds), Flora of the Venezuelan Guayana . vol. 7 .
Holm-Nielsen, R L B & Haynes, R R 2001, Limnocharitaceae . in J A Steyermark, P E Berry, K Yatskievych & B K Holst (eds), Flora of the Venezuelan Guayana . vol. 6 .
Holm-Nielsen, R L B & Haynes, R R 1999, Hydrocharitaceae . in J A Steyermark, P E Berry, K Yatskievych & B K Holst (eds), Flora of the Venezuelan Guayana . vol. 5 .
Holm-Nielsen, R L B, Haynes, R R & Les, D H 1998, Limnocharitaceae . in K Kubitzki (ed.), The Families and Genera of Vascular Plants . vol. 4, Springer .
Holm-Nielsen, R L B, Haynes, R R & Les, D H 1998, Najadaceae . in Klaus Kubitzki (ed.), The Families and Genera of Vascular Plants . vol. 4, Springer .
Holm-Nielsen, R L B, Haynes, R R & Les, D H 1998, Potomaogetonaceae . in K Kubitzki (ed.), The Families and Genera of Vascular Plants . vol. 4, Springer .
Holm-Nielsen, R L B, Haynes, R R & Les, D H 1998, Scheuchzeriaceae . in K Kubitzki (ed.), The Families and Genera of Vascular Plants . vol. 4, Springer .