provide book or article with citations of sources of information.

Being scary. To make someone afraid or nervous.

Way of thinking or behaving used for a long time.

piece of written, printed, or electronic matter that provides information or evidence. Official (printed) records that gives information. record something in form.

Making an analogy to explain something.

Something that you bought. buy.

having paid employment. action of doing work. To be functioning properly, e.g. a car.

cause, explanation, or justification for action or event. Explanations for why some things occurred or was done. To think and make conclusions in a logical manner.

relating to cannibalism. Characteristic of cannibals or exhibiting cannibalism.

account of imaginary or real people. Few of many floors or levels in a building.

Extremely good. used to indicate approval or pleasure.

Something that is not known.

Concerning things that can be seen or touched. Health check at the doctors' or hospital.

Expressed using writing. To invent or create a computer program. mark symbols on surface with pen.

spreading widely throughout area or group of people.