Lenon, B. J., & Cleves, P. G. (2001). Fieldwork techniques and projects in geography (2nd ed.). London: Collins Educational.
استشهاد بنمط شيكاغوLenon, Barnaby J., and Paul G. Cleves. Fieldwork Techniques and Projects in Geography. 2nd ed. London: Collins Educational, 2001.
MLA استشهادLenon, Barnaby J., and Paul G. Cleves. Fieldwork Techniques and Projects in Geography. 2nd ed. London: Collins Educational, 2001.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.