APA (7th ed.) Citation

(1968). Deel 39, № 4; Physica. 1968.

Chicago Style (17th ed.) Citation

Deel 39, № 4; Physica. 1968, 1968.

MLA (9th ed.) Citation

Deel 39, № 4; Physica. 1968, 1968.

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