APA (7th ed.) Citation

(1988). Presse 2000? Helbing & Lichtenhahn.

Chicago Style (17th ed.) Citation

Presse 2000? Basel u.a: Helbing & Lichtenhahn, 1988.

MLA (9th ed.) Citation

Presse 2000? Helbing & Lichtenhahn, 1988.

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