Fragner, B. G., Sadovski, V., Panaino, A., Circessia, S., & Hofleitner, B. ([2009]). Selected Writings : Part 1. Selected Writings Part 1.
शिकागो स्टाइल उद्धरणFragner, Bert G., Velizar Sadovski, Antonio Panaino, Sara Circessia, और Bettina Hofleitner. "Selected Writings : Part 1." Selected Writings Part 1 [2009].
एमएलए उद्धरणFragner, Bert G., et al. "Selected Writings : Part 1." Selected Writings Part 1 [2009].
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