Corbet, J. H. (2008). Landforms laboratory manual: A customized version of physical geography manual (Sixth edition.).
Citace podle Chicago (17th ed.)Corbet, John H. Landforms Laboratory Manual: A Customized Version of Physical Geography Manual. Sixth edition. Duboque, Iowa : Kendall/Hunt Publishing Company, 2008.
Citace podle MLA (9th ed.)Corbet, John H. Landforms Laboratory Manual: A Customized Version of Physical Geography Manual. Sixth edition. 2008.
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