Leeuwenhoek, Antoni Van (1703-12-31). „IV. Part of a letter from Mr Antony van Leeuwenhoek, F. R. S. concerning green weeds growing in water, and some animalcula found about them.”. Philosophical Transactions of the Royal Society of London (на језику: енглески). 23 (283): 1304—1311. ISSN0261-0523. S2CID186209549. doi:10.1098/rstl.1702.0042.
Leeuwenhoek, Antoni Van (1703-12-31). „IV. Part of a letter from Mr Antony van Leeuwenhoek, F. R. S. concerning green weeds growing in water, and some animalcula found about them.”. Philosophical Transactions of the Royal Society of London (на језику: енглески). 23 (283): 1304—1311. ISSN0261-0523. S2CID186209549. doi:10.1098/rstl.1702.0042.
Leeuwenhoek, Antoni Van (1703-12-31). „IV. Part of a letter from Mr Antony van Leeuwenhoek, F. R. S. concerning green weeds growing in water, and some animalcula found about them.”. Philosophical Transactions of the Royal Society of London (на језику: енглески). 23 (283): 1304—1311. ISSN0261-0523. S2CID186209549. doi:10.1098/rstl.1702.0042.