Cita APA (7a ed.)

DUYN, J. V. (1975). Practical Systems And Procedures Manual J. Van Duyn. Reston Publising.

Cita Chicago Style (17a ed.)

DUYN, J. Van. Practical Systems And Procedures Manual J. Van Duyn. Reston Publising, 1975.

Cita MLA (8a ed.)

DUYN, J. Van. Practical Systems And Procedures Manual J. Van Duyn. Reston Publising, 1975.