Cita APA

Schumacher, E. (1977). A guide for the perplexed. Sphere Books.

Citación estilo Chicago

Schumacher, E.F. A Guide for the Perplexed. London: Sphere Books, 1977.

Cita MLA

Schumacher, E.F. A Guide for the Perplexed. Sphere Books, 1977.

Warning: These citations may not always be 100% accurate.