एपीए उद्धरण

Petruzella, F. D. (2005). Activities manual for programmable logic controllers. Boston: McGraw-Hill Higher Education.

शिकागो स्टाइल उद्धरण

Petruzella, Frank D. Activities Manual for Programmable Logic Controllers. Boston: McGraw-Hill Higher Education, 2005.

एमएलए उद्धरण

Petruzella, Frank D. Activities Manual for Programmable Logic Controllers. Boston: McGraw-Hill Higher Education, 2005.