Smith, P. C. (1975). An approach to delimiting social and economic concentrations through scalograms: Mindanao. s.n.
Cita Chicago (17th ed.)Smith, Peter Colin. An Approach to Delimiting Social and Economic Concentrations Through Scalograms: Mindanao. [S.l: s.n, 1975.
Cita MLA (9th ed.)Smith, Peter Colin. An Approach to Delimiting Social and Economic Concentrations Through Scalograms: Mindanao. s.n, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.