Gaya APA
Pennick, N. (1980).
Sacred geometry: Symbolism and purpose in religious structures. .
Wellingborough:
Wellingborough Turnstone Press Ltd.
Gaya MLA
Pennick, Nigel.
"Sacred geometry: Symbolism and purpose in religious structures. ".
Wellingborough:
Wellingborough Turnstone Press Ltd,
1980.
Buku.