APA aipamena

Gibbs Philip. (1930). Since then. London: William Heinemann.

Chicago Style aipamena

Gibbs Philip. Since Then. London: William Heinemann, 1930.

MLA aipamena

Gibbs Philip. Since Then. London: William Heinemann, 1930.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.