APA (7 वां संस्करण) प्रशस्ति पत्र

Crowley, H. Revisiting Eurocode 8 formulae for periods of vibration and their employment in linear seismic analysis. Earthquake engineering & structural dynamics..

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Crowley, Helen. "Revisiting Eurocode 8 Formulae for Periods of Vibration and Their Employment in Linear Seismic Analysis." Earthquake Engineering & Structural Dynamics. .

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Crowley, Helen. "Revisiting Eurocode 8 Formulae for Periods of Vibration and Their Employment in Linear Seismic Analysis." Earthquake Engineering & Structural Dynamics., .

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