Coba jelasin Lihat juga dari Bertukar-tukar pasangan dalam bahasa melayu dong

The 158-Pound Marriage (Perkahwinan 158-Paun)

Related To Bigotry: The Repression of Swingers in Early 21st Century Britain (describes legal situation, and gives lengthy defense of swinging)

'Forever and a Day' or 'Just One Night'?  On Adaptive Functions of Long-Term and Short-Term Romantic Relationships