APA (7th ed.) Citation

Keehn, P. A. (1981). Earth-sheltered housing: An annotated bibliography and directory. CPL Bibliographies.

Chicago Style (17th ed.) Citation

Keehn, Pauline A. Earth-sheltered Housing: An Annotated Bibliography and Directory. Chicago: CPL Bibliographies, 1981.

MLA (8th ed.) Citation

Keehn, Pauline A. Earth-sheltered Housing: An Annotated Bibliography and Directory. CPL Bibliographies, 1981.

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