APA ציטוט

Perkin, G. W. (1968). Population and family planning in Ceylon. s.n.

Chicago Style (17th ed.) Citation

Perkin, Gordon W. Population and Family Planning in Ceylon. [s.l: s.n, 1968.

ציטוט MLA

Perkin, Gordon W. Population and Family Planning in Ceylon. s.n, 1968.