Johnson, C. E. (1968). Social and Natural Biology: Selections from Contemporary Classics. D. Van Nostrand Company.
Citazione stile Chigago Style (17a edizione)Johnson, Cecil E. Social and Natural Biology: Selections from Contemporary Classics. Princeton, N.J.: D. Van Nostrand Company, 1968.
Citatione MLA (9a ed.)Johnson, Cecil E. Social and Natural Biology: Selections from Contemporary Classics. D. Van Nostrand Company, 1968.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.