APA (7th ed.) Citation

JOHN, H. (1986). Helmu John. Rizzoli.

Chicago Style (17th ed.) Citation

JOHN, Helmut. Helmu John. Rizzoli, 1986.

MLA (8th ed.) Citation

JOHN, Helmut. Helmu John. Rizzoli, 1986.

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