Cita APA (7th ed.)

o Parry, J. (1975). Outlook: Science at work. Penguin.

Cita Chicago (17th ed.)

o Parry, John. Outlook: Science at Work. Harmondsworth: Penguin, 1975.

Cita MLA (9th ed.)

o Parry, John. Outlook: Science at Work. Penguin, 1975.