The boiling point trends of alkanes, alkenes, and alkynes follow well-established principles of organic chemistry based on molecular weight and intermolecular forces, making this statement common knowledge.
The claim states that alkanes, alkenes, and alkynes exhibit predictable boiling point trends (such as increasing boiling point with increasing chain length due to enhanced London dispersion forces). This is a fundamental, textbook chemical truism taught in introductory chemistry, so no citation is necessary.