Cita APA (7a ed.)

Periodical Publishers Association, editor. (1993). Best practice guidelines for subscription bureaux (1st pub.). PPA.

Cita Chicago Style (17a ed.)

Periodical Publishers Association, editor. Best Practice Guidelines for Subscription Bureaux. 1st pub. London: PPA, 1993.

Cita MLA (9a ed.)

Periodical Publishers Association, editor. Best Practice Guidelines for Subscription Bureaux. 1st pub. PPA, 1993.