APA Edition Citation

Edwin R A Seligman & Alvin Johnson. (2006). Seligman's encyclopedia of the social sciences (v.9, part 2: Lefroy - Machine, Political). Cosmo.

Chicago Edition Citation

Edwin R A Seligman and Alvin Johnson. Seligman's Encyclopedia of the Social Sciences (v.9, Part 2: Lefroy - Machine, Political). New Delhi: Cosmo, 2006.

MLA Edition Citation

Edwin R A Seligman and Alvin Johnson. Seligman's Encyclopedia of the Social Sciences (v.9, Part 2: Lefroy - Machine, Political). Cosmo, 2006.