Παραπομπή APA

Habraken, N. J., Wiewel, W., & Gibbons, S. (1976). Variations: The systematic design of supports. Cambridge: The laboratory of architecture and planning at MIT.

Παραπομπή Chicago Style

Habraken, N. J., Wim Wiewel, and Sue Gibbons. Variations: The Systematic Design of Supports. Cambridge: The laboratory of architecture and planning at MIT, 1976.

Παραπομπή MLA

Habraken, N. J., Wim Wiewel, and Sue Gibbons. Variations: The Systematic Design of Supports. Cambridge: The laboratory of architecture and planning at MIT, 1976.

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