APA (7th ed.) Citation

Barclay, S. (2019). How Vocabulary is Learned. English Teaching Professional, 120, 34.

Chicago Style (17th ed.) Citation

Barclay, Sam. "How Vocabulary Is Learned." English Teaching Professional 120 (2019): 34.

MLA (9th ed.) Citation

Barclay, Sam. "How Vocabulary Is Learned." English Teaching Professional, 120, 2019, p. 34.

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