Fern, A. G., & Nau, B. S. (1976). Seals. Oxford University Press for the Design Council, the British Standards Institution and the Council of Engineering Institutions.
Chicagoスタイル(17版)引用形式Fern, A. G., , B. S. Nau. Seals. [Oxford]: Oxford University Press for the Design Council, the British Standards Institution and the Council of Engineering Institutions, 1976.
MLA(8版)引用形式Fern, A. G., , B. S. Nau. Seals. Oxford University Press for the Design Council, the British Standards Institution and the Council of Engineering Institutions, 1976.
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