Columbia subject headings:
Homosexuality--Moral and ethical aspects.
Homosexuality--Psychological aspects.
Love--Moral and ethical aspects.
Love--Psychological aspects.
Harvard subject headings:
Homosexuality--Moral and ethical aspects.
Homosexuality--Psychological aspects
Love--Moral and ethical aspects.
Love--Psychological aspects.
Princeton subject headings:
Homosexuality--Moral and ethical aspects.
Homosexuality--Psychological aspects.
Love--Moral and ethical aspects.
Love--Psychological aspects.