Ward, S. J., & Melfi, V. (2015). Keeper-Animal Interactions: Differences between the Behaviour of Zoo Animals Affect Stockmanship. PLoS One.
शिकागो स्टाइल उद्धरणWard, Samantha J., और Vicky Melfi. "Keeper-Animal Interactions: Differences between the Behaviour of Zoo Animals Affect Stockmanship." PLoS One 2015.
एमएलए उद्धरणWard, Samantha J., और Vicky Melfi. "Keeper-Animal Interactions: Differences between the Behaviour of Zoo Animals Affect Stockmanship." PLoS One 2015.
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