एपीए उद्धरण

Warrington, A. R. V. (1971). Protective relays: Their theory and practice (2nd ed.). Chapman & Hall.

शिकागो स्टाइल उद्धरण

Warrington, A R Van. Protective Relays: Their Theory and Practice. 2nd ed. London: Chapman & Hall, 1971.

एमएलए उद्धरण

Warrington, A R Van. Protective Relays: Their Theory and Practice. 2nd ed. Chapman & Hall, 1971.