BioStor
 | An investigation of the life cycle of Macrozamia spiralis Miq P Brough and M H Taylor (1940) Proceedings of The Linnean Society of New South Wales 65: 494-524 |
 | The families of cycads and the Zamiaceae of Australia L A S Johnson (1959) Proceedings of The Linnean Society of New South Wales 84: 64-117 |
 | Phylogenetic Analysis of Seed Plants and the Origin of Angiosperms Peter R Crane (1985) Annals of the Missouri Botanical Garden 72: 716-793 |
 | A new species of Melampodium (Asteraceae, Heliantheae) from Jalisco, México B L Turner (1993) Phytologia 75: 136-139 |
 | A new species of Ceratozamia (Cycadales, Zamiaceae) from Veracruz, Mexico Vovides (2008) Novon 18: 109-114 |