1. Castle, L. A., and Meinke, D. W., 1993, Semin. Dev. Biol. 4:31–39 (embryo-defective mutants, especially in Arabidopsis).
2. Johansen, D. A., 1950, Plant Embryology. Embryology of the Spermatophyta, Chronica Botanica, Waltham, Mass. (developmental patterns).
3. Lindsey, K., and Topping, J. F., 1993, J. Exp. Bot. 44:359–374 (embryogenic development patterns).
4. Maheshwari, P., 1950, An Introduction to the Embryology of Angiosperms, McGraw-Hill, New York (developmental patterns).
5. Marinos, N. G., 1970, Protoplasma 70:261–279 (embryogenesis of the pea).