Jansen, Martin (August 1977). "Detection of an Orthonitrate by Vibrational Spectroscopy: Na3NO4". Angewandte Chemie International Edition in English16 (8): 534–535. doi:10.1002/anie.197705341.
Quesada Cabrera, R.; Sella, A.; Bailey, E.; Leynaud, O.; McMillan, P.F. (April 2011). "High-pressure synthesis and structural behavior of sodium orthonitrate Na3NO4". Journal of Solid State Chemistry184 (4): 915–920. doi:10.1016/j.jssc.2011.02.013.