एपीए उद्धरण

Dahlberg I. (1978). Ontical structures and universal classification. Sarada Ranganathan Endowment.

शिकागो स्टाइल उद्धरण

Dahlberg I. Ontical Structures and Universal Classification. London: Sarada Ranganathan Endowment, 1978.

एमएलए उद्धरण

Dahlberg I. Ontical Structures and Universal Classification. Sarada Ranganathan Endowment, 1978.