United Nations Environment Programme. (1988). Sampling and identification of common Mediterranean scyphomedusae and evaluation of their occurrence. The Programme.
Cita Chicago (17th ed.)United Nations Environment Programme. Sampling and Identification of Common Mediterranean Scyphomedusae and Evaluation of Their Occurrence. Geneva: The Programme, 1988.
Cita MLA (9th ed.)United Nations Environment Programme. Sampling and Identification of Common Mediterranean Scyphomedusae and Evaluation of Their Occurrence. The Programme, 1988.
Atenció: Aquestes cites poden no estar 100% correctes.