Cita APA (7a ed.)

Drewes, J. M. (1993). A Widening Circle: Preservation Literature Review, 1992.

Cita Chicago Style (17a ed.)

Drewes, Jeanne M. A Widening Circle: Preservation Literature Review, 1992. 1993.

Cita MLA (9a ed.)

Drewes, Jeanne M. A Widening Circle: Preservation Literature Review, 1992. 1993.