Tohutoro APA (7th ed.)
Spender, S., Bartlett, L., & Premoli, M. (1993). Caro Christopher: Lettere a Christopher Isherwood 1929-1939. R. Archinto.
Tohutoru Kātū Chicago (17th ed.)
Spender, Stephen, Lee Bartlett, me Marina Premoli. Caro Christopher: Lettere a Christopher Isherwood 1929-1939. Milano: R. Archinto, 1993.
Tohutoro MLA (9th ed.)
Spender, Stephen, et al. Caro Christopher: Lettere a Christopher Isherwood 1929-1939. R. Archinto, 1993.
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