APA (7th ed.) Citation

Lovins, A., & Evans, P. (1971). Eryri: The mountains of longing. Friends of the Earth.

Chicago Style (17th ed.) Citation

Lovins, Amory, and Philip Evans. Eryri: The Mountains of Longing. San Francisco: Friends of the Earth, 1971.

MLA (9th ed.) Citation

Lovins, Amory, and Philip Evans. Eryri: The Mountains of Longing. Friends of the Earth, 1971.

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