Cita APA (7a ed.)

Blacker,. (1981). The Building Centre maintenance manual and job diary (4th ed.). Building Centre.

Cita Chicago Style (17a ed.)

Blacker. The Building Centre Maintenance Manual and Job Diary. 4th ed. London: Building Centre, 1981.

Cita MLA (9a ed.)

Blacker. The Building Centre Maintenance Manual and Job Diary. 4th ed. Building Centre, 1981.