1. ABBOTT, M, BAREFOOT, A. C and HANKINS, F. W. 1982. Appendix 2, Specimen preparation, pp 165–172: In; A. C. Barefoot and F. W. Hankins Identification of modern and Tertiary Woods. Clarendon Press, Oxford. vii + 189.
2. ALDRIDGE, R. J. 1990. Extraction of Microfossils, pp 502–504: In; D. E. G. Briggs and P. R. Crowther (eds), Palaeobiology - A synthesis. Blackwell Scientific Publications (Oxford). xiii + 583 p.
3. ANDREWS, H. N. Jr. 1961. Studies in Paleobotany. John Wiley & Sons Inc. ( New York ). 487 p.
4. ASSARSSON, G and GRANLUND, E. 1924. En metod für pollenanalys av minerogena jordarter. Geologiska Fdreingen Fdrhandlinger. Band. 46, 76–82.
5. BARSS, M. S and CRILLEY, B. 1976. A mounting medium for palynological residues. Geological Survey of Canada, Paper 76–1B. 131–132.