APA

LAWLESS R. I., . (1973). Population, resource appraisal and environment in the presaharan zone of the Maghreb. Paris: Société de Géographie.

Chicago

LAWLESS Richard I, . 1973. Population, resource appraisal and environment in the presaharan zone of the Maghreb. Paris: Société de Géographie.

Harvard

LAWLESS R. I., . (1973). Population, resource appraisal and environment in the presaharan zone of the Maghreb. Paris: Société de Géographie.

MLA

LAWLESS Richard I, . Population, resource appraisal and environment in the presaharan zone of the Maghreb. Paris: Société de Géographie. 1973.