APA (7 ম সংস্করণ) উদ্ধৃতি

Kennedy, H. (1978). Systematics and pollination of the "closed-flowered" species of Calathea (Marantaceae). University of California.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Kennedy, Helen. Systematics and Pollination of the "Closed-flowered" Species of Calathea (Marantaceae). Berkeley: University of California, 1978.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Kennedy, Helen. Systematics and Pollination of the "Closed-flowered" Species of Calathea (Marantaceae). University of California, 1978.