APA (7th ed.) Citation

Aneirin 5XX-59X. The book of Aneirin.

Chicago Style (17th ed.) Citation

Aneirin 5XX-59X. The Book of Aneirin. Pwllheli [u.a.].

MLA (9th ed.) Citation

Aneirin 5XX-59X. The Book of Aneirin.

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