Citazione Stile APA (7a Edizione)

Jacobson, T. E., & Vallely, J. R. (1992). A Half-Built Bridge: The Unfinished Work of Bibliographic Instruction.

Citazione stile Chigago Style (17a edizione)

Jacobson, Trudi E., e John R. Vallely. A Half-Built Bridge: The Unfinished Work of Bibliographic Instruction. 1992.

Citatione MLA (9a ed.)

Jacobson, Trudi E., e John R. Vallely. A Half-Built Bridge: The Unfinished Work of Bibliographic Instruction. 1992.