- & KNAPP, B. [. (1981). Practical foundations of physical geograpgy. George Allaen and Unwin.
芝加哥风格引文- 与 Brian [Ed.] KNAPP. Practical Foundations of Physical Geograpgy. London: George Allaen and Unwin, 1981.
MLA引文- 与 Brian [Ed.] KNAPP. Practical Foundations of Physical Geograpgy. George Allaen and Unwin, 1981.
警告:这些引文格式不一定是100%准确.