APA

Dept. Of Ethics & Culture, Correspondent, . (1990). Ethics & Culture Book I. : .

Chicago

Dept. Of Ethics & Culture, Correspondent, . 1990. Ethics & Culture Book I. : .

Harvard

Dept. Of Ethics & Culture, Correspondent, . (1990). Ethics & Culture Book I. : .

MLA

Dept. Of Ethics & Culture, Correspondent, . Ethics & Culture Book I. : . 1990.