Gaya APA
Wilber, K.
(2000).
Sex, ecologi, spirituality : the spirit of evolution / Ken Wilber
.
London:
Shambhala.
Gaya MLA
Wilber, Ken.
"Sex, ecologi, spirituality : the spirit of evolution / Ken Wilber".
London:
Shambhala,
2000.
Buku.