APA-čujuhus (7. p.)

- & KNAPP, B. [. (1981). Practical foundations of physical geograpgy. George Allaen and Unwin.

Chicago-čujuhus (17. p.)

- juo Brian [Ed.] KNAPP. Practical Foundations of Physical Geograpgy. London: George Allaen and Unwin, 1981.

MLA-čujuhus (9. p.)

- juo Brian [Ed.] KNAPP. Practical Foundations of Physical Geograpgy. George Allaen and Unwin, 1981.

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