Browne, M. A. (1977). Sand and gravel resources of the Central Region, Scotland. Her Majesty's Stationary Off.
Chicago-Zitierstil (17. Ausg.)Browne, M. A. Sand and Gravel Resources of the Central Region, Scotland. London: Her Majesty's Stationary Off, 1977.
MLA-Zitierstil (9. Ausg.)Browne, M. A. Sand and Gravel Resources of the Central Region, Scotland. Her Majesty's Stationary Off, 1977.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.