Garratt, a. (1961). Penguine science survey 1961: 2 part. Penguine Books.
Citación estilo ChicagoGarratt, arthur. Penguine Science Survey 1961: 2 Part. USA: Penguine Books, 1961.
Cita MLAGarratt, arthur. Penguine Science Survey 1961: 2 Part. Penguine Books, 1961.
Warning: These citations may not always be 100% accurate.