Cockerell, T. D. A. Bees from British Guiana Bulletin of the AMNH, Vol. XXXVIII, Art. XX, pp. 685-690.
Chicago-čujuhus (17. p.)Cockerell, Theodore D. A. Bees from British Guiana Bulletin of the AMNH, Vol. XXXVIII, Art. XX, Pp. 685-690.
MLA-čujuhus (9. p.)Cockerell, Theodore D. A. Bees from British Guiana Bulletin of the AMNH, Vol. XXXVIII, Art. XX, Pp. 685-690.
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