Christensen, K. I. (1985). List of representatives specimens for "Taxonomy, variation and natural hybridization in Pinus mugo Turra and P. sylvestris L. Pinaceae". Institute of Systematic Botany, University of Copenhagen.
Chicago-Zitierstil (17. Ausg.)Christensen, Knud Ib. List of Representatives Specimens for "Taxonomy, Variation and Natural Hybridization in Pinus Mugo Turra and P. Sylvestris L. Pinaceae". Copenhagen: Institute of Systematic Botany, University of Copenhagen, 1985.
MLA-Zitierstil (9. Ausg.)Christensen, Knud Ib. List of Representatives Specimens for "Taxonomy, Variation and Natural Hybridization in Pinus Mugo Turra and P. Sylvestris L. Pinaceae". Institute of Systematic Botany, University of Copenhagen, 1985.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.