Cita APA (7th ed.)

Fry, P. (1971). Biological science: Laboratory book, a technical guide. Penguin Books.

Cita Chicago (17th ed.)

Fry, Peter. Biological Science: Laboratory Book, a Technical Guide. Harmondsworth, England, United Kingdom: Penguin Books, 1971.

Cita MLA (9th ed.)

Fry, Peter. Biological Science: Laboratory Book, a Technical Guide. Penguin Books, 1971.