APA (7th ed.) Citation

Petrovic, A. (1937). Serbian Gypsy Feast-Days. Nature.

Chicago Style (17th ed.) Citation

Petrovic, Alexander. "Serbian Gypsy Feast-Days." Nature 1937.

MLA (8th ed.) Citation

Petrovic, Alexander. "Serbian Gypsy Feast-Days." Nature, 1937.

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