APA (7th ed.) Citation

Berry, F. (1962). For a ninetieth birthday: [sonnet for John Cowper Powys]. [publisher not identified].

Chicago Style (17th ed.) Citation

Berry, Francis. For a Ninetieth Birthday: [sonnet for John Cowper Powys]. [Place of publication not identified]: [publisher not identified], 1962.

MLA (9th ed.) Citation

Berry, Francis. For a Ninetieth Birthday: [sonnet for John Cowper Powys]. [publisher not identified], 1962.