APA (7th ed.) Citation

Poerwo, H. H. (1993). Irregular verbs. Penerbit Kanisius.

Chicago Style (17th ed.) Citation

Poerwo, Helly Handoko. Irregular Verbs. Penerbit Kanisius, 1993.

MLA (8th ed.) Citation

Poerwo, Helly Handoko. Irregular Verbs. Penerbit Kanisius, 1993.

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