APA (7 वां संस्करण) प्रशस्ति पत्र

Douglas, D., & Hooker, W. J. (1836). Brief memoir of the life of Mr. David Douglas, with extracts from his letters ... Printed by E. Couchman for S. Curtis : Published at the Botanical Magazine Warehouse.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Douglas, David, और William Jackson Hooker. Brief Memoir of the Life of Mr. David Douglas, with Extracts from His Letters ... London: Printed by E. Couchman for S. Curtis : Published at the Botanical Magazine Warehouse, 1836.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Douglas, David, और William Jackson Hooker. Brief Memoir of the Life of Mr. David Douglas, with Extracts from His Letters ... Printed by E. Couchman for S. Curtis : Published at the Botanical Magazine Warehouse, 1836.

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