APA (7th ed.) Citation

Hay, D. A. Essential of behaviour genities. Blackwell Scientific Publications.

Chicago Style (17th ed.) Citation

Hay, David A. Essential of Behaviour Genities. Blackwell Scientific Publications.

MLA (8th ed.) Citation

Hay, David A. Essential of Behaviour Genities. Blackwell Scientific Publications.

Warning: These citations may not always be 100% accurate.