Hoffman, P. J. (1988). An Evaluative Directory to Producers and Distributors of Unabridged Books on Cassette Tape. Occasional Papers Number 184.
Chicago-Zitierstil (17. Ausg.)Hoffman, Preston Jones. An Evaluative Directory to Producers and Distributors of Unabridged Books on Cassette Tape. Occasional Papers Number 184. 1988.
MLA-Zitierstil (9. Ausg.)Hoffman, Preston Jones. An Evaluative Directory to Producers and Distributors of Unabridged Books on Cassette Tape. Occasional Papers Number 184. 1988.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.